I don't understand this. Backing a political movement is probably the worst thing he could do. He's completely distrusted politically, and polls terribly with the general public. He would only taint any movement he backed.

If he had backed (now suspended) Presidential candidate Andrew Yang early enough he could have aligned himself with Yang's message: highlighting too that Amazon paid $0 in taxes + is closing 30% of malls, etc. - which would be him acknowledging and responding to the issues at hand that Yang; allowing him to acknowledge the current system's structure - that all companies including Jeff's - must compete within, but that it's ultimately a problem for society (even if it's good for the economy/GDP).

Nobody trusts or likes oil companies or drug companies or media monopolies either but they are extremely successful at achieving their political goals.