This position increasingly wants technically not-open-source licenses that reserve the right to profit from the code for... actually, a certain corporation, the one of the "original developers". It's not really about "by corporations", but "big corporations" vs "plucky entrepeneurs who deserve to get rich from their innovation".
Whereas before, for open source enthusiasts, it was about "those who get rich from code" (whether big corporations or 'plucky entrepeneurs') vs some kind of 'commons' or 'public good'. (The new ideological position believes they are still open source enthusiasts somehow, but that their non-open-rights-reserved licenses are somehow 'more truly' open source than... actual open source licenses including the GPL. The term 'open source' still has too much credit for them to say they are opposed to it, even when they are).
There is definitely an ideological shift going on. I am curious if anyone has written/researched more about it.