If anything, I think 9ball has become too difficult, but I figured I'd have a look first at the At Large stats from the Reyes Cup first. To state the obvious, most of these matches featured highly ranked players with good breaks.
Here's what I found.
Racks played 103 B&R racks 17 so B&R % approximately 17%
Racks played 103 the side that broke the balls won just 49 of those racks and lost 54
At the Reyes Cup, the world's best, as a group, were not breaking and running much and the break did not appear to be an advantage.
This seemed odd, so I looked at the China Open 9ball, played just a few weeks ago.
There, the B&R rate was 23% and the breaker won 52% of the 126 racks tracked.
At the US Open 9ball, the B&R rate was a very impressive 30% and the breaker won 62% of the 204 racks tracked.
If we add the stats together for the Reyes Cup, the China Open and the US Open, we find that of the 433 racks played, there were 107 B&R (25%) and the breaker won 241 of those racks (55.6%). In other words, over these 433 racks tracked by AtLarge, the breaker won about five of every nine racks.
In short, the break offers only a small advantage. Any suggestion that the 9ball break is broken does not hold up to scrutiny. The days of dominating with the break (as SVB did in 2014-16) are long gone and the formula for winning includes a lot of defense, kicking, jumping and tactical exchanges.
Of course, as we have seen at Derby City, enlarge the break box and loosen the pockets and the top pros can have a field day, but those are not world-class specifications.