I don't want to weigh in here with a huge value judgement on whether this is the right decision. However, I do want to say that what they're saying regarding SSPL vs AGPL is totally right. One of the biggest sticking points with SSPL is that it's not even really plausibly open source, and it tries to create restrictions that implicate software that is not even "linked" with the program that is licensed under it, whic…
(Timescale founder) We actually designed the Timescale License to be _less_ restrictive than AGPL. It contains no virality. It just prevents public clouds from offering TimescaleDB-aaS.
Timescale license does not provide that, so obviously it's more restrictive than even the most viral of open source licences.
To be specific, the sentence "the customer is prohibited, either contractually or technically, from defining, redefining, or modifying the database schema or other structural aspects of database objects," spits in the face of all the ideals of open source. I can respect your decision to choose such a license, there are understandable practical arguments for that, but I can't respect you calling that open source - if you consider that users should be restricted with what they can do with their data schemas, if you include an explicit anti-user-freedom clause, legally mandating software developers to be hostile to their own users - then at least have the guts to openly say that you are against open source (because of all the valid reasons you have, I'm not denying that, you don't have a duty to be pro-open-source), instead of misleadingly labeling your license as such.