I'll be honest; I'm pretty sure this "mistake" will be completely forgotten by the next month. Their enforcing that their subscription only works with their product should not really come as a surprise to anyone, and the alt-agent users are a small enough minority that they'll get over it.
I’m starting to think you’re right but only because software engineers don’t seem to actually value or care about open source anymore. Apparently we have collectively forgotten how bad it can be to let your tools own you instead of the other way around.
Maybe another symptom of Silicon Valley hustle culture — nobody cares about the long term consequences if you can make a quick buck.