If we have a plan to be an instant rich person, the best and fastest thing we can do is buy bitcoin, if you have assets such as property, gold or others then I suggest selling and using to buy bitcoin, I have friends who sell houses worth $ 100K to buy bitcoin a few days ago, he has a vision for a long -term hold.
I think your suggestion needs to be clarified again so that it is easier for everyone to understand and no one will misunderstand. Because basically to become an instant rich person is not easy even though you and your friends have already bought Bitcoin at this time with the money from selling the house.
And in my opinion, the decision made by your friend is a bit ridiculous, even though it is solely to buy Bitcoin. But such a decision doesn't seem wise enough in my opinion, because buying Bitcoin doesn't have to be selling a house or other valuable asset that we already have. Because Bitcoin can still be bought in a very small size or according to the abilities possessed by everyone without having to sacrifice a house as a place to live in this world. Unless your friend has more houses in this world.
Indeed, investing in bitcoin can make someone rich as long as you have basic knowledge of investing, finance, and fundamental analysis techniques. But to become a rich person after holding bitcoin in the long term is a difficult thing to do if you can't manage emotions. Therefore, investing in bitcoin or altcoins is highly expected not to panic so that the profit target you want to get can be achieved.
It is better to invest according to their respective abilities than to have to force yourself to invest by selling a house or other asset that also has value. Although long-term investment into Bitcoin is something that is often suggested by many people. But investing also doesn't need to sacrifice more existing assets if there are other ways that can be taken properly and wisely.