Why don't you go ahead and give it a try, find out for yourself...

If you split your money 3 ways you have 3 chances at success and end up with 3 IPs at the end of it. Spending all your money on one show puts all your eggs in one basket.

Plus it is in generally cheaper in the UK and elsewhere in the world to produce shows than it is in Hollywood/US. So it is not the same comparing a 10 episode US show to a 10 episode UK show monetarily anyway. Like I said, US productions have crazy money at their disposal, not so elsewhere.

I've read all of the answers (so far) in this thread and whilst they're not wrong as such, the answer is and always will be: MONEY. Hollywood TV budgets are crazy compared to everywhere else on planet earth. I remember in the 2000's the cast of Friends getting $1million each per episode (OK for seasons 9 & 10 at least, but still) and this was like 15 years ago. Nobody in British TV is getting paid a mill an episode. I'm not trying to play the "dumb Americans" card but I think you guys are so used to the craziness of US entertainment budgets that you think it is normal - it isn't normal at all...only in America!