> Gig work seems like socialized slavery to me.

You're not wrong, it's the logical next step for capitalism.

"Again we have diluted ourselves into believing the myth that Capitalism grew and prospered out of the protestant ethic of hard work and sacrifice. The fact is that Capitalism was build on the exploitation and suffering of black slaves and continues to thrive on the exploitation of the poor – both black and white, both here and abroad. If Negroes and poor whites do not participate in the free flow of wealth within our economy, they will forever be poor, giving their energies, their talents and their limited funds to the consumer market but reaping few benefits and services in return." - Martin Luther King