Crypto investment is superp ,fine and good considering the fact that it considers little amount and it allows anyone of different financial status to invest on, based on their financial capabilities at a particular time. Bitcoin goes further to being able to add more funds to your investment as the time goes based  your current financial level, maybe as your income increases and you decide to increase your investments then you go ahead to do so.
But there are other platforms or investment plans that does that. An example of such is a forex trade. Forex trading can take as low as a dollar to trade with. This gives opportunity to everyone as well to invest and trade so far as the individual in question understands the trading rules so as not to loose out quickly.