so only 4 out of 64 of the 128 players get enough to pay maybe for their expenses for the trip.
get my point here? they need to structure the playing conditions to lure more players in general that have smaller chances of winning..
I think from Matchroom's point of view, the reasons to have lots of players is to create buzz back home, encourage new talent, and satisfy room-night requirements at the venue. Other than that, the sub-800 players are just underfoot. If a match is not worth watching, it is not useful to MR.
The chance to get your entry fee back in MR events is already much, much better for the bottom half than in the traditional American pro event. Consider Derby City for example, and look at the added money there. 11th place got $1600 in the nine ball with nearly 500 entries.