Of course, then you need to solve all these problems yourself. That sounds pretty easy, you'll have it done next week no problem!
That was sarcastic, but this isn't: good luck, let us know how it goes.
But if you want to let the various PAAS providers put the fear into you, that's your cowardice.
Let the others learn as they may.
Edit:
To clarify, Heroku is making the problem harder on themselves than it would be for an individual to serve their own needs because of the complexity managing so many customers and apps.
You don't have to be Heroku to do for yourself what they offer.
I agree with this, actually. I know it's not simple to do your own servers when you're growing. Yet I'd rather improve my existing ops skills a bit than have to setup everything as async APIs (on EC2 anyway). That's the only way I can see that I can solve this.
You're going to discover that a lot of "ops skills" boils down to "do things asynchronously whenever possible". And while nearly any smart engineer can think of the "right" way of doing something, finding the time to do it all is a huge opportunity cost.
That's what the parent is trying to say. It's not that you can't do it; it's that it's a really bad idea to do it, at first.
This "bad idea" is how 90% of the web works...
I can only imagine how these guys must have been beating their heads against the wall. Heroku charges a premium price and should be providing a premium service.
Depending on the complexity of their setup, they COULD have it done next week no problem.
After all tens of thousands of other sites have. It's not like everybody except Google and Facebook is using Heroku.