No, but I have learned a bit about software licensing to be able to meaningfully engage in making run of Minio, so this is real info.
Specifically, most open licenses have a clause like this:
(from GPL3) ...and are irrevocable provided the stated conditions are met ...
Which is the bit that means you can't decide after the fact that at this point in time the software was not licensed under GPL3, this is to protect from I guess license-entrapment, which is sort of what you'd like to do.
However, even when this irrevocability is unmentioned, there's US precedent[1] that consideration is exchanged in the use of a FOSS license, which TLDRLEGAL means that a license not mentioning irrevocability is likely revocable only for violation of its conditions.
More details: [2]
1: https://scholar.google.com/scholar_case?case=177761825741712... 2: https://opensource.stackexchange.com/questions/4012/are-lice...