>>49990239They tried to pull nostalgia marketing by concepting Pokémon GO and it died after 2.5 years after the release, it's impossible for a single game to weight the entire economy of a company and yet with constant profit (which is impossible as such thought led to 1929's Crash).
Gamefreak, in its current stand, is always bound to make something new in order to gather new/more audience over the years. You can make a new yet innovative service but you cannot permanently halt everything else just for it. If the community of that game dies so it will be Gamefreak's only profit as well.