Matchroom is about making money!
In this instance it just happens to be a pool event that they are using to make the money.
There's the sponsors, Sky TV, % of sales at venue etc.
Up until last year it had been a bit of a 'no contest' for the preceeding half dozen years or so.
It being a 'no contest' affects Matchrooms earning potential and ultimately could affect the future of the event without major changes.
So Matchroom will do whatever they need to do to keep this event earning them money.
If that means playing fewer matches on days 1, 2 and 3, just to make sure it lasts 4 days they will.
They will do whatever they think it takes to make this a competitive event. That could include moving the 1 ball onto the spot cuz that's what the USA team is used to. Having pocket sizes that they deem to suit the USA team. Amending the selection process for the USA team. Also practice matches, more time together, etc, etc, etc
It is business. It is Matchroom's business. And they work really hard!