But it wont last a lifetime. Buying a specific game for its returns would have a serious discount compared to almost any conventional asset. And "time" is work

But it wont last a lifetime. Buying a specific game for its returns would have a serious discount compared to almost any conventional asset. And "time" is work. Building a house also requires just some materials and some time :). Even real state needs management (things break, rents have to be collected, risk of lawsuits, tenants that dont pay).