You're right about the growth of the profits in this bull run, based on the current ATH that happened few days ago, for the price of BTC to hit $102k, has helped people to earn plenty of profits from BTC investment because some people bought BTC last two years when the price was very low in the industry, and they decided to sell their BTC in this month of december. It was a great surprise to many people  seen $102k this year because they never thought that BTC price will get to this position we found it today, because they were still thinking that BTC will end up like some altcoins in this industry, but there is a massive progress in BTC investment which it will encourage other people to test the investment when the price start dumping again.

Even those that invested in BTC in the month of January, still earned massive profits from BTC investment because the price of BTC was still around $45k or $60k when they bought BTC and hodl for the bull run to occur before they sold everything off to achieve their goals this year.