Typically wage caps are more at the squad level (let's say that's equivalent to 12.5M at your 10K/week for a squad of 25) and this then gives the team the wiggle room to do what they want within that limit e.g. pay a 'star' player 30K/week. However, the Premiership have had 30 years to institute something like this and have never done so and as a result the 'big 6' continue to dominate and always will with the odd anomaly e.g. Leicester. Can't see The Premiership 2 (Championship) going down that route either.