ADC, It's never going to happen. Paypal doesn't have a Monopoly position. It may be the only method of payment for eBay but that is only one venue.
You seem to think that Paypal fees are far too high. I suggest that you haven't really looked at the costs of alternative services, because if you do you'll see that they arn't very much more.
The Government will only step in if there was a true Monopoly, and there isn't one here.