the microstock earnings don't seem that bad to me,I see that there are contributors who earn more than 2000 usd a month and even more,of course it takes time to get to this point,but if you work with consistency in 10 years you can get there or even sooner,then it obviously depends on several factors.
of course if you live in the most expensive places in the world,2000 usd may be little,but in Europe most people don't earn 2000 usd (1850 euro) a month!