I think investing in crypto and real investment such lands and estate are same. Both are potential and has high ROI as long as we comprehend and understand well the strategy or the rules. Most people not get ROI because they just think simple, they have much comprehension about the investment. The most crucial things in investment are comprehend and keep learn about it.
I don't think crypto and real estate are the same. You can buy and sell crypto within seconds, it tends to seem more like speculation/gambling for many. Whereas real estate has less liquidity and the ROI (which may reach the same levels as some crypto) needs a longer amount of time to realize. But picking real estate has similarities with picking crypto too: a not as well established developer may give you better deal before the project promising higher ROI is similar to an ICO/early project with a novice crypto project team.