For what it's worth, I don't necessarily think it's the solution as much as I think it is the likely outcome. We, and the FCC, can continue to dream that all these local investors are going to come out of the woodwork to buy up these stations, but we continue to see the opposite of that happening as the small, local owners continue to sell out (i.e. WBBH).
Some of these stations have already sold off their towers, and I really wonder how long it will be until you start seeing companies wanting to sell off the transmitter itself... Setting up something similar to the UK's broadcasting system where the transmission is contracted out to Arqiva. Especially as the bean counters at these groups love not owning things, and nobody seems particularly interested in doing anything useful with ATSC 3.0... It might be more "economical" to go through another round of spectrum auctions with the caveat that some will remain for television, and Crown Castle or whoever can buy that up and rent out the space to everyone else. We're already kind of seeing this with the post-repack channel shares out there, and ATSC 3 is primed to consolidate much of a market into a handful of frequencies.