First of all just because i am from Boston and Red Sox fan does not mean i don't understand how hard it is for small market teams to compete. The A's of the early 2000's and the Twins to this day are model examples for small market success. So please don't tell me what i can and cannot comprehend.
As for competing with a $20 million dollar payroll; perhaps you need to redifine your meaning of the word. They played with a $20 million dollar payroll (as have the Marlins and the Pirates) but they did not compete. They had 12 seasons finishing 20 or more games behind in their division, 17 finishing at least 15 games behind, 19 finishing at least 11 games behind, and in all that only had a winning record twice in a season finishing in double digits behind in their division. Interestingly, in 1990 the Brewers had the ninth highest payroll in baseball and still finished 14 games back in the AL East
He may have brought baseball back to Milwaukee, he may have had the will to keep them there against all odds and all the kudos in the world to him for it. But that doesn't make him a great owner.