The trend seems to be that capitalism works great for new and emerging markets. It incentivises optimization, and businesses will naturally try to min/max profit. Once the product/service/resource is ubiquitous enough to be nearly mandatory, the min/max of capitalism tends to push for conglomeration. Once that happens, number must go up, so they cut corners and dilute their own service or product to enshittify it to extract more profit.

I say once a service/product/resource is a staple of the society and effectively mandatory for a person to have, a free, socialized, option must then exist. It must meet the minimum demand for a person, while still having better/higher tiers available- but the encroaching free option is then the main driver of competition.

Right now, a lot of capitalism markets don’t have any real competition, so they have no real incentive to genuinely improve.