They said they intend to delete customer data if they don't switch to paid plans: this means "fuck our customers", collectively and indiscriminately, not only the selected foreclosed accounts but everybody that depends on them.
Customers who are running businesses and knowingly breaking the ToS? I'm not sure why businesses like Docker aren't allowed to defend their revenue.
It's actually pretty hilarious how many of you are coming out of the woodwork to attack Docker, they are not the enemy in any way, shape or form and if they disappear you're gonna miss them.
But, as a business whose prosperity depends on the goodwill of masses of users, Docker can and should "defend their revenue" in a way that minimizes collateral damage in the form of
1) gratuitous bullshit, untrustworthiness, lack of transparency, and perceived evil intentions (e.g. their second announcement)
2) technical uncertainty and security risks (for orphaned images of uncertain status)
3) inconvenience, without additional revenue, to the vast majority of users that aren't included in this the shakedown
There are rational businesses and there are businesses that drive them away their customers; in the long term, the former tend to "defend their revenue" much better.