$1 trillion dollar market cap for Bitcoin is such an important and powerful statement, that it will definitely result in not only capital parked in Gold to shift towards Bitcoin, but pretty much all legacy assets will start bleeding to a certain degree.

After that $1 trillion dollar milestone the "slow" capital (the braver institutions, governments, hedge funds, royal families, etc) will start to massively inflate Bitcoin's price towards even greater hights. It would be a tremendous achievement when governments will finally start stocking up Bitcoin instead of just Gold.

It's actually quite 'easy' to see Bitcoin hit a market cap of $1 trillion. Bitcoin at $60,000 with a circulating supply of around 18 million coins at that point is only a matter of time. Realistically, we're just another bull run away from doing it.