There are several points which I want to address here.
1)This is not a "become a millionaire overnight job". It like any other genuine job where you have to devote time to earn something.
2)You think that earning of this site is not that much. Let me tell HamaraUP this month's earning is Rs. 2140. out of which we are sharing Rs. 1040. I think Rs. 1040 is not a small amount. Out of this Rs. 1040 Rs. 683 remained unshared, you could have been your's or anybody's.
3)It is not that you only benefit form sites's revenue share program. If you have an adsense account you also earn in dollars through, if you write good article that bring traffic. Even if you don't have adsense account, your good articles will help you getting an adsense account, through which you can earn in future. It like sowing a seed to reap the benefits in future.
4)Also if you like to take the analogy of business, it will also work here. For example when you start a new business, you don't get profit from the very first day. First you have to invest. Profits come pouring there after.
I hope my points might have made some things clear. Hoping to see active contribution from you in coming days.