Best to look what games offer and decide based on that.
I have backed both, but at this moment FD is winning my interest by offering me more simple solution to get rid of crap I hate, namely PvP and it's inevitable entourage.
For SC, I have to find private server (which someone has to run) to have that freedom. Now I can simply choose private group.
Perhaps Roberts changes his thinking and scales tip again but that remains to be seen.
But truth is, I doubt there is room and money out there for SC, FD and EVE. One or two of them have to go down to provide enough players and funding for the survivor(s) to keep rolling in long term. Which ones you expect to survive might also be worth noting when deciding where to toss the money.
I do think there is plenty of room for both games. With the launch of the Kickstarters of SC, ED and even LT - specially SC amazing crowdsourcing initiative - the interest for the genre has piqued. Something that enlarges the market and expands upon it - many players new to the genre have been attracted to it, specially on the American market.
While both games have a online component, their post MMO design makes them less dependent on big player numbers to create a game world experience. I also believe that the cost structure is far lighter than traditional MMOs in terms of servers and support needs.
The MMO in the room - Eve - is the one that has the most to lose. But it has proved time and time again to be quite durable and have a strong following.
Now, on the SC / ED relationship.. Like many, I've happily backed both games - ED far more - and I believe that both will be great games on their own. Quite different approaches, and both enrich each other. I see it more as coopetition than competition.
Using a movie image I like both 2001 and Star Wars. The world is better with both than it would be with only either of one (although this image is slightly flawed because those too movies have far less in common than ED and SC will).
Even Limit Theory can bring good things to the genre.
What we do not need is an aggressive attitude versus either game, game developer or respective communities / supporters. It is nonsense in the most trivial way. Destructive and pointless.
A side note on the American dominated business: American companies (actually publishers like EA) may "dominate" the market with "crappy games". I differ strongly, as the quality of PC games has been quite high (from Skyrim to Bioshock), the indie scene has been extremely alive and successful (also thanks to digital distribution systems like Steam) and many - most - developers are not even US based (Montreal, Sweden, Croatia,...).
But what makes the "American domination" point rather moot is that these are not publisher owned games. These are crowd funded initiatives that support the vision of very talented individuals.
Oh, and I do not forget CR support of Elite in times of need
