All the pokemon adverts for the Gameboy and Gameboy Color were so weird and campy. It also makes me really nostalgic right now (grew up with pokemon anime and stuff) Makes me wonder what TPC would've wanted during the 90's.
I can answer that: SURVIVAL! Fact is, Pokemon was supposed to be this massive FLOP, so Nintendo put it on the GameBoy...which, in 1995, was considered by them to be at "end-of-life", so if Pokemon failed, no biggie.
However...well, the rest is history now. But even while it was blowing up, the various bits of what would become TPC were frantically scrambling because
this was not supposed to happen. It really wasn't until around 2001 when they were able to really wrap their heads around what in the hell they'd unleashed, and it was around then that the "50 year plan" was formulated. And not long after that was Junichi Masuda's "meeting under the desks", where in order to get the staff to comprehend the concept of mythos creation, he killed the office lights, lit up candles, and had everyone hide under their desks like cavepeople as he began to spin the entire cosmological yarn that begins with Diamond and Pearl, an arc that we're actually still on (even though it might not look like it sometimes).