AT&T is NOT interested in sharing any future FTTH they would install. They are also not obligated in doing so.
Sonic and AT&T has setup a reselling agreement to run over the FTTN lines at comparable rates to what AT&T would charge anyways. Since the price points are similar, it doesn't hurt AT&T if a customer signs up for Sonic FTTN. I am sure there is language in the agreement that AT&T gets some cut from a Sonic FTTN customer. If you look at the packages, AT&T has started offering higher tiers but Sonic is still stuck at the old 24/50mbps down packages because of the previously mentioned agreement. AT&T really has no obligations to share it's infrastructure with a competitor.
AT&T is simply not going to invest millions of dollars in a build out just so they can let a competitor come in on the same lines, and undercut them. Sorry, you're really not making the case any better.
All I was saying is that Sonic CURRENTLY IS available in our area THROUGH the AT&T Network via FTTN. I listed the surrounding area to show that there are PLENTY of POTENTIAL customers here READY for FTTH, IF Sonic were to implement it here. Shadow Hills is SIMPLY a SMALL HOA of just 200+ Homes; BUT, that we have a HUGE base of POTENTIAL customers here READY for Gigabit.
I believe it was mentioned in SEVERAL Threads here, (months ago), that IF customers switched from AT&T to Sonic over the available AT&T Network of FTTN to "...broaden the Sonic Customer Base..." that Sonic would consider getting FTTH "...faster..." Unfortunately, since Sonic does NOT offer a TV Package directly, our residents here are more hesitant to make the immediate switch. As stated, we are currently with AT&T AND have the U-300 TV Service, in addition to our 50Mb Internet Package. We switched YEARS ago, running kicking and screaming AWAY from Comcast back then. It's probably been something on the order of 10 years, now. However; many people here have Home businesses, and have Satellite for TV Service. THESE people are PRIME for FTTH via Sonic, because they DEFINITELY want the FASTEST Internet speeds available! They would, in turn, recommend Sonic FTTH to their neighbors here, IF it were available.