I know how the OP feels, but one isn't allowed to complain about it so don't, mmmkay?
The fanbois roll out a long list of apparently reasonable arguments and suggestions supporting the Arena Caps, which in reality simply aren't plausible.
What it comes down to though is that HT consider large numbers of customers sharing an arena a bad thing for business because everyone behaves badly.
You can't win this argument SpinMan, so it's best to apologise to everyone for being deluded or make good on the threat to leave.