I was thinking you were going to advice investors to spread their income to other tangible business after investing in bitcoin. Over the last decade we have seen that bitcoin has out performed gold in terms of ROI and it will still perform more than it in the coming years so I would rather steak with bitcoin than going here and there in the name of diversification. As for altcoins you have to be very careful before you venturing into it before you end up losing your money. That money you want to put in altcoins you can use it and start up another business that can be fetching you money. A tangible business you have control over it is far better than investing in altcoins that is prone to rug pull.