They still have linked their OpenCollective account, where they have raised $10K and still have a balance of $5K. [0]
It's not a lot in the great scheme of things, but, have they been using a platform that's seemingly built for communities and open source to bootstrap their business?
Because this is not a 'open core' situation. They just closed the repo and ran away. If they had that idea all along, I feel like it hasn't be very, let's say, ethical.
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0: https://opencollective.com/localstack#category-ABOUT“Open core” is when part of the product is open-source and part is private.
Was a significant part of the product private before this announcement?
If not, someone can fork the repo and immediately launch a competitor (FOSS or paid). (Technically even if so, except it wouldn’t be immediate, and if they’d have to re-implement too much, it would be easier to start from scratch.)
Just because you don't like it doesn't make it "unethical".
Its JBoss again....
Wait, so a company shared their work with the public for however long, then decided to leave what was shared up ... but stop sharing ... and you're upset?!?
They did everything properly by the rules of OSS, decided it wasn't in their best interest to keep doing OSS, and left all their code available, as required by OSS. They were a textbook good participant.
Meanwhile, 99% of companies never open source anything: why aren't you complaining about how "unethical" they are?