Those clubs that are able to spend the maximum cap already attract the best players, so how does that differ from a free market?
Where does wage inflation enter the equation? Super League created wage inflation of extreme proportions when the first News money came into the game. Are you saying that the men behind the top clubs are so incapable of realising that e.g crowds, hospitality and merchandise are so important that they would fail to continue to tap these vital revenue streams and simply spend their own money?
The production lines at Saints, Leeds, Wigan etc are there because of the astute management of the clubs and the existence of strong amateur leagues in those areas, plus an ability to attract kids from elsewhere.
How is the competition more even? What indicators are you using to assert this assumption? The Ceteris Paribus rule does not apply simply because all other things are not and never will be equal.
You say if you have money you are in, but it doesn't actually work like that.
The ability of a club to compete should not be determined by preventing investment, it should be determined by an ability to meet it's obligations. If you have got money you are in, as you say.Scrap the cap, it's there in name only anyway.