I wonder which regulations in the UK allow for it to be so cheap. Where I live in Belfast, our only high speed internet option is Virgin, so it might as well be

I wonder which regulations in the UK allow for it to be so cheap. Where I live in Belfast, our only high speed internet option is Virgin, so it might as well be a monopoly as far as we're concerned, and yet we only pay the equivalent of about $30 a month for internet and +200 channels. Maybe part of the tv license fee is going towards infrastructure costs?