What problem? The only problem is the perception of unfairness. There's no measurable relationship between effective tax rate and team success.
Let's say you and I are working at the same company and are both starting families at the same time. The company randomly gives me double the pay, despite the fact that we do the same job. Twenty years later our kids turn out to be equally prosperous. Was the situation unfair or was it only perceived as unfair?
The degree to which the tax/cap issue is important is a matter of perception, and it is often overstated. But it is unfairness in itself, an obvious unequal playing field whether the team success in our little sample has a relationship or not.
Players who choose to take lower cap hits to live in prestigious cities should have higher cap hits. Players who don’t have families should have a higher cap hit. Players who don’t need to pay taxes to their home counties should have a higher cap hit.
There are a ton of reasons why a city or a player gets more or less benefit from their cap hit than others. Should Canadian teams have their caps adjusted because they are potentially more attractive to Canadian players? I think they should lose half their cap space because of that.
To continue the analogy above, people might say "Why bother with equal pay for equal work? Oh you're concerned about the effects of that on the next generation? Are you going to insist that every child be equally beautiful? Be equally well spoken and intelligent? We have so many inequalities, why bother with this one?"
My point of course is that establishing an equal playing field in one aspect does not require establishing that absolutely everything be equal.
Oh yeah?
I'm not sure what you're asking me. I am an economist. I'm not saying it's some great thing, we have our own ridiculous biases just like lawyers do.