Not to mention the fact that that we've lived through all of this before with Twitter. Entire businesses were built on their API and then were obliterated in one fell swoop.
On the other hand, there's been a decent number of people who have made lots of money because they were the first to build an useful product on a platform.
Sure but then you're in the boat where you have some n finite period of time to slingshot from needing API Service to having a viable enough business to live without it.
Time to move on to the next thing, unfortunately.