They do exactly the same in the video game industry, they release "new" annual versions of each of the top franchises such as FIFA, WWE, and even Pokemon, and they're all basically the exact same game as last year with maybe an increased roster of characters, the core gameplay is still pretty much unaltered.
That's because nothing else sells well in the West outside of annualized sports and shooters.
Literally nothing else sells on PS4 and Xbox except for Sports, racers, AAA blockbusters and shooters.
Everything else literally does sub 100k in the West.
Pokemon is not annualized, it adheres closer to a biannual release schedule for each generation and even that's not always ture.
there was no mainline Pokemon title for 2015 and people were livid and sent Nintendo, Game Freak and TPCi lots of hate mail over it.
Sun & Moon (Gen VII) is November 2016
ORAS (Gen III remakes) were in Fall of 2014
X&Y (Gen VI) was in Fall 2013
B2&W2 released in Fall 2012 WW (all games released worldwide starting here)
B&W (Gen V) released in Fall 2010 in Japan, Fall 2011 in the West
HGSS (Gen II remakes) released in Sept 2009 Japan, March 2010 in the West
Platinum (3rd game) released in Sept 2008 in Japan, March 2009 in NA, May 2009 in EU
D&P (Gen IV) released in Sept 2006 in Japan, April 2007 in NA, July 2007 in the EU
Emerald (3rd game) released in Sept 2004 in Japan, May 2005 in NA, October 2005 in EU
FRLG released January 2004, Sept 2004 in NA, October 2004 in EU
R&S (Gen III) released in November 2002 in Japan , March 2003 in NA, July 2003 in EU
Crystal (3rd game) released in December 2000 in Japan, July 2001 in NA, November 2001 in EU
G&S (Gen II) released in November 1999 in Japan, October 2000 in NA, April 2001 in EU
Yellow released in September 1998 in Japan, October 1999 in NA, June 2000 in EU
R&B (Gen I) released in February 1996 in Japan, September 1998 in NA, October 199 in EU
If we take out remakes and 3rd games (which are not required to fully enjoy each gen).
Then:
- Gen I lasted 2 years
- Gen II lasted 3 years
- Gen III lasted 4 years
- Gen IV lasted 4 years
- Gen V lasted 3 years
- Gen VI will have lasted 2 years
No the gens are not the same at all, each gen changed and added stuff.
Gen I started it
Gen II added color, shinies, breeding, new movies, new evolutionary methods, IVs, berries, new items and new Pokemon types (including Steel and Dark)
Gen III added natures, abilities, new Pokemon evolutionary methods, new breeding mechanics, new Pokemon types, secret hideouts, new ways to obtain fossils, Pokerus, Battle Frontier and new battle/stat items
Gen IV split the special stat into special attack and special defense. Split moves into physical, special and others. They also added the underground to mine items and fossils. They also added double battles, wild double battles, swarms, online battle and trading, and online Global Trading System. They changed/added things to the breeding system and battle system on top of it. There is also Pokemon changing forms based on items. new abilities and natures. new Eeveelutions
Gen V added a new Pokemon types/mixes, new moves, new abilities, story driven game, Pokemon fusion (you can fuse two legendaries together to form a super mon), new stat items, new season cycle (Effects evolutions and moves), new breeding mechanics, Pokemon Dream world and a few other things.
Gen VI added fairy type (counterbalance to Dragon), Mega evolutions, new breeding mechanics, new evolutionary methods, customizable trainers, new battle mechanics, new eevolution, new stat items (they even let you change to a hidden ability if a Pokemon has one with an item)... there other things that were added.
Gen VII ads a type super attack (Z-move), changes the way badges are collected (no 8 gyms), Hyper Training for level 100 Pokemon, Battle Royal mode, Pokemon Riding, New Pokemon Forms, new types and evolutions for existing Pokemon exclusive to Alola region (these games). It will also have connectivity with Go. We will know more later as new information comes out.
That's on top of all the new moves, new stats, new Pokemon etc... each gen has.
It really irks me when people say all the mainline Pokemon games are the same.
I mean the spin offs such as Go are a different story
Last fall, there was a lot of complaints about Madden, FIFA and NBA2k series having too many changes and too many new features. Their sales all took a hit because people were too unhappy with the latest installments.
Maybe the new games in a few weeks will change that.