What is the point of colleseum?

I think CG knows what they are doing when it comes to manipulating the playerbase and maximizing EA shareholder returns.  They have turned R10 mats into something that the players are bidding against each other to obtain.  There is no set value conversion because you may be on a chill shard or you may be on a cutthroat one.  But the currency needed to acquire the R10 mats is zero sum, meaning if you get more, someone else in your shard gets less.