Until the first few break down and you need to buy new ones, just to realize they are different from the ones you have by now (or discontinued outright).

Which means it does need outside help (even passive help).

So? Reddit has about 10 sizeable Subs that are just a variation of “Ask Any and All Questions”. That’s not even counting speciality subs like “MedicalQuestions” or “ITQuestions” or “DermatologyQuestions” or “AskTrangender”. Or the different language ones like “FragReddit” (German). In the end 1-3 will become the major ones, all will be a bit different and everyone will find the ones they like most.

Sans the tomatoes (from the Americas after all) Pizza has been around at least 2000 years ago: https://www.reuters.com/lifestyle/pizza-painting-found-ancient-roman-ruins-pompeii-2023-06-27/

We also have a written account of Persian soldiers using their shields to bake a flatbread with cheese and dates on top from the 6th century BC, which one could count as Pizza.

But you need to host the videos on your instance and foot the bandwith bill, which will prevent it from taking off like Youtube. Too expensive for anyone outside of gigantic monopolistic companies.

It relies on peer-to-peer, not hosting.

BTW: there is also a Facebook equivalent (Friendica, GNU Social, Dispora and Hubzilla), a Instagram equivalent (Pixelfed) and a Instant Messenger (Matrix)

Replace? No. Be a valiable second option? Sure. Like in the early 2000 when you had dozens of major forums for certain topics. Something Awful, GameFAQs, Digg, Slashdot, 4chan, NeoGAF… It‘s not a natural law that there has to be one service having 95 % of the discussion market locked up.

Money is tighter since the inflation affects VC and stupid money flowing in. Stock prices are not going up, people have no money to play with (see the death of NFTs at the same time, the definition of a stupid investment).

Lemmy, KBin and Mastodon fullfil all the needs for online news outside of dedicated news sites for me by now, Twitter is something I haven’t used directly for months now.