I don't really think you're correct. It is appropriate to call it not capitalism. Because that's what's happening. Capital is not controlling the means of produ

I don't really think you're correct. It is appropriate to call it not capitalism. Because that's what's happening. Capital is not controlling the means of production. Perhaps algo-ism or something. Firstly, there is nothing super special about most of these platforms that would make them difficult to reproduce even with a small amount of capital. Secondly, even with vast sums of capital you can't be assured of successfully pulling users away from an existing platform. The point of capitalism is that efficiency is created by the flow of money directing the means of production. Instead with the platforms directing things we see massive gameification of the systems and inefficient direction of production by the platform manipulating things to make the platform more money. Ultimately the will of the consumer is being misdirected by subterfuge creating inefficient markets which are no longer being directed by capital and not capitalist. The platforms all reach a point where they can't make more money by simply injecting more funds to be more productive. They can however make more money by actually being worse and extracting more value from their users though.