Seems the problem is that these massive companies hit a threshold in size and then everything is about self-perpetuation by creating large moats, even ones that don't make sense, hence you have teams and entire departments engaged in boondoggles that are wastes of time and resources.

Imagine Facebook pouring untold manpower and money into developing original content such as cloning HQ Trivia, for its also-ran streaming content that no one watches. Or even Facebook Reel, which mostly just reposts TikTok and Instagram material. Or the entire hopeless arena that is cloud gaming, where all of these tech companies are involved in with no service that has really taken off yet.

I suppose if the regulatory environment was to correctly deter these companies from staying so big and content and engaged in wasteful behavior, there would be actually more companies, and all of those people in the companies you mention would be distributed across smaller, nimbler, more customer-focused firms, with more competition and thus better choices for consumers. That's the theory, anyhow.