Fraktul: Yes, they could do that. Broadband margins are pretty low however, the additional CAPEX and OPEX expenditure means this is not a compelling proposition for operators.
If there was significant competitive advantage from one of their competitors with such a tarrif plan then you probably would see some operators adopt a different approach to national traffic tarrifs. There isnt currently.
It just does not make commercial sense to take this approach in the current market if your business model is as a simple bitstream provider with little affiliation with content providers.
Agreed but network capacity will keep going up, so peering by Telecom might be enough to stimulate such a move. That could make the difference between unmetered national traffic, and unmetered with lots of FAST bandwidth. Probably more ISPs are setting up PoPs around the country too, so 10G links could become more common. Maybe a 10G peering exchange will take a bit longer, but sharing huge amounds of national data would require more capacity there pretty quickly.
Qualified in business, certified in fibre, stuck in copper, have to keep going ^_^