I agree, it has the lottery style structure of the descending prize pool with the big prize at the top getting less and less as you go down the ranking. I immediately thought the same when I saw that. But there's also the competition element to it too. 

justanumber

Yes - in some of the trialled formats. 

The OP suggested the MSM is a competition and I am likening it to a lottery. 

A number of posters are questioning its value and suggesting it is unfair. I think they would prefer to see the rewards as more directly linked to their efforts on a daily basis rather than waiting for the monthly. I do understand how it works - I just don’t like it. 