well bitcoin are just starting to adapt to our society and there's also many great things of what will happen to bitcoin so i think its not too late and if im right it only released in 2009 so i think its pretty early to say its late.also bitcoins value are constantly increasing to it will assure  your profit in the future so the early you buy it the more income you can get.and there are many things you can do with bitcoin you can invest, buy things things online or offline and you can even buy other altcoin which also a good way to earn money.