Also, I disagree that music service providers have an incentive to out songs that are digitally manipulated. Their priority does not lie in "accurately reporting charts", that's ridiculous. Their priority lies in making money off of music sales.
I really think that the majority of normal music consumers are unlikely to pick their music service provider according to "who should I buy from so my purchases will be (accurately!!!!) reflected on the sales charts?" Ppl (I assume) would choose who to buy from according to "X is not a shitbag company with human rights abuses, the website/software interface is good, the customer service is decent, there's little downtime/lagging, I already have an account". Casual music listeners are not obsessed with seeing X artist do well. They just, you know, want access to music they'll enjoy. So there's not much reason for them to care about this.
Of course, if this really blows up to huge scandal proportions and any particular music service provider specifically manages to come out with a bad rep in comparison to the others, maybe consumers will take that into account (eventually). But for the most part, no.
Should we even care that some companies/producers are manipulating the charts? All it does is lower their profits unless they're nugus and need the exposure, and in that case good for them if they succeed.
Only if one is overinvested in charts. XD As someone who does not live in SK and thus does not have to be inundated in CFs featuring so-called undeserving idols who are "not really popular" or "wouldn't be really popular if they had played fair!!!" why would it matter to me on a practical level?
I only care because I want an accurate representation of whether my favorite group is doing well. :( Because they are nugu, so if they don't do reasonably well maybe they won't be able to continue as they are. (But there's always UKISS, so I think they will be alright, in the end....)
(And because I like stats, actually.)