I think that's always been a threat. If a large business decides to target an area you develop a system for, you're basically out of luck unless you have some novel IP that's difficult to replicate. You really have to have something niche, patent it, etc. otherwise you just roll the dice that massive entity X doesn't steamroll your livelihood out of business.

>An alternative take, which I'm sure won't be popular, is that now, with an interpretation taken to the extreme, a megаcorporation can basically steal your (let's say a small startup's) platform (in case you refuse to sell it for ethical or some other reasons), by re-implementing it and investing much more resources which you don't have, to make it more attractive to customers.

GNU/Linux, a free reimplementation of AT&T's Unix interfaces, is largely why commercial Unix isn't really a thing any more.

Thats what patents are for. API is like designing your own custom plug to your device. You can't copyright that plug design, you can patent it its novel and new.

Happens today, like AWS Elasticache and AWS Aurora. I do think you're right in that it will make those decisions easier. Particularly for AGPL/GPL things. Now they can be reasonably sure that cloning the end user facing API bit is "fair use".

Ho you mean Amazon AWS?