The issue is choice. The same people who'd scream if Murdoch had the power to force everyone to subscribe to the Wall Street Journal don't think it's a big deal that everyone is forced to subscribe to the BBC.
Assuming the government is still going to fund a TV station, not having a license for BBC would just mean it was funded out of general taxation revenue. Having a license system or not is irrelevant, it's still being funded by taxation either ay.