I think that's the wrong lesson. Go with companies where you can use open software stacks that you can migrate elsewhere if need be. Google's price hike wouldn't have been very important if you could easily run App Engine code elsewhere. You can never be sure whether a company is going to suddenly screw you, but you can control what kind of code you write.

Migration and cost of migration, how much it cost to take the data out of the provider, if you are using cloud database services.

Based on that episode, me too. It would take a decade of reading about their excellent customer service before I'd trust them.

What do those companies charge?

How difficult would it be to migrate?

I had to close down one of my sites. We basically built too much around google and made it difficult to migrate. Basically had to re-engineer bunch of stuff and it wasn't worth it anymore. With MySQL it's different obviously depending on how easy it is to dump your data and transfer it

Did you ever write about this? Seems like a lesson a lot of people need to hear.