This is just a clever ploy to get the most promising start-ups locked in before they realize they're paying through the nose for a commodity.
And don't forget that it's credits not money.
You can't take this and spend it at leaseweb or digitalocean if that's your preferred way of solving things, nor will they pay you to dis-entangle from the lock-in once you want to move.
kubernetes, python, riak. certainly myriad options at each of those tiers which are OSS, easily deployable on cloud/on-premise, and well understood. If those things are a challenge for your org, I'd recommend that a Cloud provider might be the way to go!
And don't forget that it's credits not money.
You can't take this and spend it at leaseweb or digitalocean if that's your preferred way of solving things, nor will they pay you to dis-entangle from the lock-in once you want to move.