After reading a few posts on here about theories, I decided to make a theory myself, please tell me what you think.
At the beginning of each Pokemon game, the regional professor will ask you to go on a journey to fill your PokeDex, not taking no for an answer. Not only that, but they give you various rewards for completing said PokeDex.
Perhaps the data was wiped from their researches and they need you to go out and gather data. This would explain why, unlike in the anime, you can't get any data unless you capture it and learn more about its behavior.
What are your thoughts on this?