> in a political context

While you are right to recognize that there was some attempt to inject political context, it was not there originally, and is not the main discussion taking place. The fact that wages and productivity have become decoupled is not inherently political. It is but simple mathematics. Tech is the cause for the decoupling; it is why we have been able to become continually more productive and at an accelerating rate.

> The vast majority of tech work was done in employment

Yes, but generally even where employment is present tech workers also demand a share in ownership (e.g. stock). Tech doesn't invent itself. At least not yet. The workers have held the cards. Even those who haven't won the lottery are still in a pretty good economic position, relatively speaking.