The investors who consider buying and building on a land to rent are those concerned about long term benefit from the stable income they have been able to setup which will come monthly or annually as agreed by the tenants occupying the property.
If you want an active flow of income, you can buy a property and rent it. Some people think that it's such a headache because renting it to people since they need to meet different people and keep maintaining the property. Compared to if you just sell it to one person, you get the money and that's it.
Bitcoin investment is good, and real estate is not only for the old.
It's just that younger generations are more knowledgeable about crypto and bitcoin but I still see people even with younger people interested in real estate.