None of that is done by Google, FB, Twitter, et al John. The Telcos provide the infrastructure and we all pay for our internet service through our mobile, broadband or fibre subscriptions. Telcos do not use advertising in their business model. In Europe anyway, I don’t know about other geographies.
They’s a bit of a hackneyed saying about the Net, if something is free then you (the user) is the product, because nothing is free. Google have “free” search, email and apps but that’s just so they can spy on people and use the personal data they collect to target advertising and/or sell to third parties. FB and Twitter the same.
I prefer to pay €99 a year (for some reason I only got charged €80 this year) for a family subscription to Microsoft 365 which gives me and five other members of my “family” all this for a total of €2 per week and no prying eyes on any of us.
Nobody could accuse me of being a MS fanboy but I do think this is a good deal and I do know the raison d’etre of the “free” products is to gather personal information.