The OSI is a consortium of cloud platform vendors (really - check for yourself). Of course they'll define open source in a way that excludes licenses that restrict them from turning your work into closed-source cloud platforms. The good news is that we're not beholden to their definition as they have no official status whatsoever. We don't have to believe them just because they put the words Open Source in their company name.
The BSL is clearly not open source since it requires approval from the licensor in certain applications, but the OSI also rejected the SSPL, which is just an extended AGPL that requires source code publication in even more cases, and is clearly open source because of that.
The BSL is clearly not open source since it requires approval from the licensor in certain applications, but the OSI also rejected the SSPL, which is just an extended AGPL that requires source code publication in even more cases, and is clearly open source because of that.