If they don't even have the ability to earn money to eat for one day, how are they supposed to invest into bitcoin. At the moment bitcoin is also in a bear market, do you really think those kids can wait for 2-3 years for the net bull market to potentially gain a few dollars at most?! Also to use bitcoin you would need a phone with a data connection that also does cost quiete a lot of money.
One thing we will consider here is that we all believe there's a certain amount of money spent each day and there's a little portion as well spent on contingent also, we can not wait to have the financial bouyancy at large till when the money is much, this is a potential that makes people to maximize their ability in making small things into something big, this is the brain behind growth, little by little they can sum up little funds to become a financial savings to be used for an investment in bitcoin.