[drivebyubnt]

The main reason Google launches popular products by invitation only is to manage server load. Otherwise you get situations like the Pokemon Go launch, where the service was unreliable for the first few months.

[skinnymuch]

Pokémon Go was mostly fine. I didn’t play it beyond a few months. Nor did most people I know.

[wetpaws]

Pokemon Go was an absolute nightmare at least for a few months.

[winrid]

I'd love to read some articles on what they had to do to fix it.

[cloverich]

Unreliable because too many people want to use it is the goal :)