Renting it out is the most rich thing I can think of. Having buildings, and I do not mean just like a home or apartment or whatever where people can live, I mean like shops, offices, factories and such, that you rent to other people? That seems like a great deal and I know a lot of people who invested in those things to get richer and they did, they are making a good income as well.
Most people are making a mistake by not buying plots of land, it's just a good idea and could become much larger in the future. I know that it is not going to be easy to handle it all, but it could very well be something that could make profit for some people.
You are right about this, we can rent it out to other people, so we can earn income without losing assets. But of course this requires a strategic location because it is also difficult if it is in a remote place, especially if it is a dead road or in other words a road that is not a main road and is only a road for people around. In my country there are many factories, so they use their land to build rental houses, clearly it is a very tempting business, there is also a luck factor that they have. Because to own land in a place like that is very difficult, because the previous landowner will definitely know what they will get if they have land in strategic places like that. So even if they are going to sell it, the price must be very expensive.
Here no one can against this because we all understand importance of having good earning through this method but as mentioned we need property at better place for having good earning because without having this advantage we can't have good income even this can ruin because if your property is not as right place then your money is on losing side, and you are also losing many other benefits of having things well under control.
In my country, we are having nearly 55% to 60% peoples those are not having their own houses and mostly are living on rents with many buildings and other colonies are set by companies for having good solid long run income and commercial based properties are having more income and having business like this is profitable because mostly peoples are trying to have all on rent with they are not interested to spend huge amount for buying.