Your guess is as good as mine, especially for the Pacific Northwest and Indiana, the markets Frontier got. It's my understanding that Frontier actively argued against taking the fiber systems, but Verizon said "take them or no deal," so Frontier acquiesced because they wanted to expand their footprint. I suppose that Verizon didn't want to operate islands of fiber with no other Verizon facilities for hundreds of miles.
Frontier stopped trying to run people (and by "people," I mean "potential television subscribers") off by mid-last year. Now they've even gotten into the full swing of things by offering double play bundles and promotional rates. Of course, this could be trying to get people back
on the fiber systems because there's a rumor going around that Frontier wants to buy Verizon's copper lines in Texas and California. If they do that and they can make the fiber systems Verizon foisted on them look good enough, maybe they can hand them back to Verizon... (Nah, it's probably something silly like not wasting all this money on an expensive fiber network and figuring they should actually try to turn a profit or something.
)