OUYA!...

Ever since steam released for linux, I've been using linux

To answer op, i would just play the other systems i own from this gen until the price of all the games for the one that died plummet enough to buy the entire back catalog, then slowly work through them during quiet periods for the remaining consoles.

I really don't have a main console or main company I support. PS2 and 360 were my favorite consoles of their respective generations (For reference I also own a PS1, GC, Xbox, and PS3), but that doesn't mean I have any particular  loyalty to them this generation. I have the Wii U already and this year I'm probably going add either the PS4 or X1 to that. I'm leaning towards PS4 atm, but that can change depending on what both have at the point I decide to purchase. 

I owe loyalty to no one... I only make my decisions based on which platforms offer the games that I'm interested in playing. You'll miss out on a lot if you're blindly loyal to one particular company.

I have no idea who this is. Should I hunt him down and get to know him?

Each gen for me: (Console only)

S Genesis

N64 + PS1

GC + PS2

Wii + XB 360 + PS3

Wii U

I have had multiple consoles a gen in the past but plan on being Wii U only this gen. Although, I wouldn't be surprised if I buy one of the other 2 later on because of their library of games. I learned last gen, no need for all 3.

I owned a Dreamcast (but I bought it after my Gamecube), and I noticed that most of Sega's support moved to the Gamecube. So in the case of Dreamcast flopping, if I were a super Sega fan, I'd have bought a Gamecube.

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For this case I'm assuming your talking about XBO. If Microsoft left gaming I'd assume their first party studios would go to Sony's PS4 (due to similar specs, and console rivaly like Sega/Nintendo). So I'd buy a PS4 then, and play Halo 6 on that.

If Nintendo went out of business, I'd buy a Steam Machine. Which ever one was the best value for the smallest price. At least I'd be able to use an Oculus Rift then. No Man's Sky on Oculus with Steam and free internet... On a console... Yeah. No competition. If Nintendo went third party, Valve would probably be where most Nintendo gamers would flock. I'm not spending a dime extra for online I'm already paying for. I don't care how many "free" games the subscription comes with.

Oh, the original PlayStation! Yeah, I really need to catch up on that platform's JRPG library. I have a PS2 with backwards compatibility, but still need to catch up on those.

Actually Xbox was initially the Sega Dreamcast fan's console of choice.

sequel to it's best game in Jet Set Radio Future and a highly anticipated title (Gun Valkyrie) was shifted from Dreamcast to Xbox. Sega GT also migrated to Microsoft's platform.

If you were a Sonic Team fan, GC was the logical choice though.

The cheapest Steam Machine is $500, a PS4 is $400. Which is cheaper?

Plus if Steam Machine takes off, I doubt that free online will be around much longer.

Don't forget Panzer Dragoon Orta for XB1 and Skies of Arcadia Legends for Gamecube. Seems like the Dreamcast fanbase got split.

However knowing Nintendo, it's likely they would go fully on the PS4.

I'm a believer that a real gamer has more than one console anyway. Do you have a handheld also? It counts.

If not, give PC a try.