Planetary Annihilation faced this kind of scrutiny as well by having all modes require server connections, last I checked (but haven't verified), UberEnt released a patch for a totally offline mode after months of bashing. They did constantly announce they would try to support it or get it patched in and received tons of flak and negativity from communities. I love that game, but found myself annoyed and playing SupCom 1 and 2 more.
Here, I find myself loving Elite and hoping it will someday have a true offline mode. But thankfully, if that doesn't happen, I'm generally connected to the Internet...but considering Elite plays so well on my cheap Dell 3540 laptop, I would like to have a solo mode for when I travel out of the Internet's grasp on my technology. Dissapointed? Yes. Surprised? No.
I think Frontier will come to their senses and resolve this, nobody can ignore the public, their customers for too long and stay in business. Especially if their doors staying open relies on the success of one product. That's just my opnion tho.
UberEnt tried to, let a lot of folks down and had to cancel their next kickstarted game mere days into it because of little interest and belief in them (they claimed their end not being able to maintain it...which is kind of direct on the funding and backing from fans).
If not, well, I have Evochron Mercenary which has been my go-to sim for years, and is still amazing. Seamless offline/online, no server connection required, seamless planetary landings, etc. Its age and indie-ness show compared to ED and SC, but its flight model is awesome and super challenging, and feels similar to ED. So at least I have options there should I lose Internet and wanting to get my Space Sim on.
Let's home that Elite Dangerous gets the patch to appease those that would like a totally offline experience. I for one would love it as an option even if I chose online 100% of the time. I love the game so far in beta form, and can't wait to see its future. I hope its worth continuing to support for years, because honestly I don't enjoy SC much yet and EvoMerc is great but ED has me addicted.
Cheers folks.