Just wait until the broadcasters fully implement ATSC 3.0’s conditional access system. That is how they are going to replace the lost retransmission fees.
Each station will probably have a overcompressed 480i “barker” channel playing just weather and local news. The rest will be pay TV.
I don't think so. I believe they are gearing up to sell an extra cable type package of programming for $50 a month is what I have read, but the regular channels & diginets will stay. After all the public would not go along with regular OTA network programming as pay. OTA was struggling for years. they got a boost with diginets and retransmission fees, but I do not think they would jeopardize what they have now. With 3.0 they will have a lot of extra room for selling a package. The airwaves are run by the FCC and supported by taxpayers. The Network has a lot on competition anyway without ticking off the public.