This is insightful. But I'm not sure it's completely true, I think people just have shifted their perception of what selling out means.
Content creators on YouTube, for example, get criticized when they literally sell their brand to a larger conglomerate. It seems people do not complain if they do sponsorizations tho.
> Content creators
I'd argue the very words creating "content" implies something commercial is already in mind and is a driver, rather than just doing your own thing online and not caring (such showing a video of your band/hobby on YouTube in case anybody is interested).
To a Gen-X'er, the former sounds like they are already a sell out :-)
I certainly agree with you that perceptions have shifted.