To be honest, I think everyone who has been against Bitcoin so far is regretting it
You can say what you want, but in addition to all the brilliant features of BTC (decentralized, online, private, etc.), it still had an almost unbeatable performance for several years, and traditional investors who were against it are now questioned by their clients why they didn't invest in BTC before
There is still time to buy BTC, as 100k can still be cheap and allow a safe entry for the medium and long term