I think this whole thread assumes it has to do with availability of cards and monetary investment.
I own 8 power cards, all the blue dual lands, time vault, library of alexandria, 4 mana drains (LoA and drain aren't even good anymore, wth?) and a bunch of other expensive vintage cards. Yet I think the last time I even bothered sleeving up a vintage deck was in 2016 or so. That lasted about two weeks before I tried my hand at legacy instead which I honestly enjoyed more.
I think the sad fact is that many of the people who own the cards and could play vintage just decide not to. That is at least the case for me. I just don't think any of the tier1 decks look fun to play with (or against for that matter). I don't really see this changing anytime soon (If ever) so i'll be sticking to oldschool formats for the foreseeable future.
Taking a look around this forum I barely recognize any usernames either.