I'm really torn on these popup MVNO's like TFG and Ting. Ting in particular because of the *currently* locked in phones. I'd hate to buy a $500+ SGSIII for Ting and then have them flop in 6 months when that Japanese company buying a huge chunk of Sprint lays the hammer down on them.
Same with the Verizon MVNO's. I can't see how Verizon would ever open up LTE to them. It's their cash cow. It's their retention policy. Even recently with the iPhones it was a cash play between VZW and PP with Verizon wanting to keep high priced subsidy phones locked in under their corporate billing.
I could see them doing something like AT&T does with ST and letting modern phones connect, but not giving them the LTE love. That would be the best of both worlds for both Verizon and PP. Verizon keeps LTE users locked in under their caps. They jettison off 3G users. And Page Plus picks up the scraps with a BYOD plan where people can bring unlocked/out of contract devices over that are current, high feature phones and connect them without having to do flashes, hacks, ect.
Ting isn't going anywhere soon. They're backed by Tucows, so they're in it for the long haul. Plus Ting will have BYOD here shortly. Ting also is trying to line up "alternative" carriers under their stable, most likely AT&T or T-Mo (they're looking to add GSM capability to their offering).
PagePlus has been around for a long time now, I believe about 7 years. Again, they're Verizon's #1 private reseller, they make Verizon way too much money to shut down.
Regardless, I'd bet you're more right about VZW MVNO's and LTE. I'd be shocked if they get it, especially with the plans they have. But apparently Verizon hasn't been worried over the last several years on their CDMA network, AND they will be working on shutting down the network over the next 10 years, so there has to be SOME sort of arrangement sooner rather than later.