For the paycheck? For many people, ideological concerns and years-out possible downsides are less important than putting food on the table.

That would be great in a idealistic world where the establishment is not building a control grid using surveillance capitalism rather use the technology to benefit the anology world. In the current geo-political climate the question is do one want to get paid to build one's own digital prison?

Only training the experts should be doing is the ones that is self-hosted or through community of people one trust! Currently none of the big corp qualifies, not sure if the structure of big corp (that it is a person-hood) is capable of creating anything beneficial in the long run.

Why should the big companies benefit from your expertise to build centralize their control?