Well, what I assumed you meant was, for something to work, it has to be able to make money, and that's what I disagree with. If you weren't saying that, then nevermind.
How not? Everything costs money, living expenses, bills, pleasure, children, taxes, etc. In the world of business, everyone strives to be the best, however if everyone was equal, who wins? There would be no need for different companies working for the same goal, therefore there would be a ridiculious amount of jobs lost.
Basically, people are paid for their creativity and ideas. Look at how you get a job these days, you hand in your resume, right? Your resume lists all the things you've done, and the reasons you can do the job you apply for better then the next person. Isn't that competition? Isn't that why you've gotten your jobs, iago? Because you went to college, you have the experience, and that makes you better then the next guy applying for that job. If you're against competition, get rid of your resume. Go apply for a job, say "I'd appreciate it if you didn't read our resume's, and hire every single one of us. It's just not fair to give me the job and not someone else."
The current system has noteworthy flaws, so we should explore alternatives. It doesn't necessarily lead directly to "this place would be better without competition", but it does expose some problems caused by competition.
The thing is, what's better than competition? Earlier in this thread it was stated that everything in use today has spawned from creativity and competition. I watched a History Channel film on the development and history of computers earlier in one of my classes, and every single breakthrough in computers was based on the need for that scientist, mathmatician, etc. to make their computer work better then the prior model. If we stopped at Apple 1, or the Univac, the world today wouldn't be half as efficent. And that's just computers, nevermind every other field.
Some of your arguments make sense to a point, but theres one thing you cannot argue. Everything is based off competition. Every industry, profession, company slogan, brand, anything. The public, or a potential employee, or even potential girlfriend/significant other wants to know, what can you give it/him/her/them that the guy standing next to you can not provide?