I think that once you have more than X customers, you don't really need OSS testers and bug-reporters that much – your customers will be the first ones to file a ticket if anything is wrong. And as we saw with CentOS Stream, OSS users are not generally keen to be beta-testers.
Ditto for earnings: once your company is publicly traded or at least lands in a Gartner report, you don't need evangelists that badly anymore.
Free pull requests are always welcome, but I guess a calculation was made in this case.