It's unlikely that AWS prices would increase because they're already making some healthy profits, and there is (as others have said) more and more competition.

It's unlikely that AWS prices would increase because they're already making some healthy profits, and there is (as others have said) more and more competition. For the competition, they don't offer the same services at AWS, and don't have the same market share, so they have to offer at a discount. That said, there can be quite a bit of customer lock-in associated with the "premium" services, such as DBaaS, or DNSaaS which make it really difficult to switch off of a platform. That could be the hook at some point in the future to keep people paying the "AWS tax".