I was recently on the fence looking at x1 due to forza 6. Money isn't an issue. But after I got a Wii u for Mario kart 8 and then the Wii u sat there doing nothing else after I got bored of Mario kart, decided no to an x1.
Ps4 is enough for me. If forza couldn't entice me to stump up for a x1 I think it's pretty safe to say despite money not being an issue I'll never be buying an x1 it seems. Just nothing other then forza in interested in from Microsoft or Xbox , but least this time I've been sensible and not got an x1 as it would just be wasted as I'd never use it once I've got bored of forza.
I'm happy enough with my PC and ps4. Has me prety much covered for gaming needs.
You say it isn't an issue, but it obvious is. You've said yourself you want to play Forza but think its poor value for money to only buy one game.
You're perfectly correct of course, it is poor value for money. But taking money and its value out of the equation, you'd have one.