Even though your idea is good, not everyone is willing to sell their land because there are several factors that limit it, one of which is memories and also the hope that the value of the land will increase many fold, i still remember one of the members here made a good post, for an asset like property is actually not much different from bitcoin, the price will rise if the location is strategic and usually a lot of land will not sell because the location is not strategic and the price is expensive, so don't be surprised that some land will sell for decades to come. Bitcoin investment is really good and very profitable, but if you want to sell your property, think about it carefully unless you are very sure and reckless.
My father always said to me that don't ever sell your land you should make it fertile and use it for the fruits and vegetables etc. So keeping this thing in mind I have never look for selling my land nor for anything whether if we talk about the crypto it would not be a good and completely wise thinking to selling a person's own land just for investing it in crypto. Because may be and often the land prices increases surely with time to time. But in crypto we can't have full information whether we can get the profit or we would be given and handle loss .