I vehemently agree with you, with the rapid growth of Bitcoin every wise investor who hasn't invested in it ought to start investing now as Bitcoin will be more capital intensive within a short period from now.
It is indeed quite worthy to be used as a very smart investment choice for all investors today and of course it would be even better if it was used as a long-term investment choice forever. You can also see evidence that is not too far away for you to check, namely around the beginning of 2023 where at that time Bitcoin was still in the price range of $16K and investors who bought Bitcoin in large quantities at that time must have been quite happy when they saw the price of Bitcoin which had broken through $108K in early December 2024.
Those who won't hop on now will regret it later.
In less than a decade, we will have much more to see and witness on the stage of bigger players working and accumulating Bitcoin - and that's great.
Currently, big investors like Blackrock and Microstrategy are still accumulating Bitcoin by continuing to buy it without thinking about people who are still doubtful about Bitcoin because those who doubt are not necessarily smarter than the two big companies. So we don't need to think about those who regret it as long as we ourselves are still willing to try to involve ourselves in Bitcoin investment as other big investors have done up to now.