[ex-aws-now-goog]

Sure and this is to be expected. It costs time and money to align yourself with someone else's implementation and unless your customers demand alignment (e.g. S3-compatible storage interfaces), you're probably not going bother.

Again, this comes down to cost-benefit calculations. If some companies find that proprietary feature X from cloud Y provides a bigger (perceived) return on investment than not using feature X, then they are likely to use it. If company X later shafts them, they have to swallow more costs to migrate away but hopefully (for them) they took this possibility into consideration when they made their original decision.