Yes multiple privet services satisfying one need wouldn't fight. I wish we could see that in practise. :roll:
They don't "fight" with violence, they compete over consumer demand in a fair manner and will thus produce the best supply. In some places it is already happening though the US (and indirectly those who are supporting her) is the main exception. In an earlier era it would be strange for so many weak African nations to exist without being colonized.
Yup, this has happen on some places but it will remain only in that few regions, do you think it can last long? Even after hundred years world peace is still impossible to achieve.
There are many multi-national organizations in the world though some of them are exclusive. The inclusive ones will help lead to greater cross-national unity. If this was Europa Universalis 3, Europe would win every war without a sweat.