Elite's Kickstarter was more of a proof of market exercise, they received additional private backing after the Kickstarter ended as well as a sale of shares a year ago. Why would David Braben taken anyone for a "ride"? Elite is his baby basically.
Having said that, planetary landings will not be in the release, as was well described by Frontier at the time, but we're also not seeing all 25 ships this December either (it was 15 originally) and at the time of me writing this we're expecting more content, few additional features and lots of bug fixes, plus polish. Oh and now another 5 more over time, to make at least 30.
I've backed SC too, and well...I agree, things will change for them too and they have more riding on trying to keep all their backers happy which in itself will be impossible.
Interesting, whilst writing this I have realised we're actually getting what was described in the original Kickstarter, before any mention was made of an offline mode, or any of the stretch goals, so honestly aside from the poor communication they seemed to have done remarkably well for just around two years work.