Indeed, if people have a lot of money, apart from investing in bitcoin it is also better to invest in some altcoins that have strong fundamentals so that the profits obtained are satisfactory from the variety of coins traded both in the long term and in the short.
I'm not completely with your opinion, from a home perspective I know that when we have more money, the most important thing is to ensure the safety of the investment, not the optimal profit.
And my experience in this market, after all btc will always be the only option in the portfolio in the long run it meets the criteria of return as well as risk of loss of assets.