What if pokemon go let people earn bitcoin? Then it is a really good idea, if this is the other way to earn bitcoin, then no doubt i will play pokemon go everyday. Even im not a game lover, then thats the time maybe that i will play some games. If a person caught a pokemon then it is worth of 1BTC haha then i probably sell it and collect more pokemons to have more bitcoins. 
Hmm. You can't say that you're going to play Pokemon Go everyday for sure. That's the very same thing people said even before Pokemon Go was launched. After a week or so of playing, they all got bored of it. You don't know how much bitcoins can you earn from Pokemon Go (assuming that they implement the bitcoin idea). You might be dissatisfied by how low it is and not even bother to install Pokemon Go.
People have already caught the rare Pokemons so I don't think there would be a Pokemon worth 1BTC since the supply is huge. Pokemon Go developers would have to wipe the saved accounts on their game and start over, make it harder to find rare Pokemons, ban all bot users, and implement something new to the game (i.e. P2P battle).