If the long-term outlook for the Brewers salary was $20 million per year for the foreseeable future versus $200 million per year for the foreseeable future you can guarantee that the prices of tickets, merchandise, etc would be different.
Saying that the largest expense for a company/team (salary) has no impact on the prices it charges flies in the face of every business everywhere, and plain old logic. Citing one teams temporary reduction in salary is not proof of anything.
Yes, every business owner wants to make a profit, and if they can charge more without incurring extra expense, they will. Just like players would love to make more money with little to no extra work. This doesn't negate the relationship between players making more and fans paying more. Fans, after all, are the majority of the Revenue component of this business, if not ultimately the sole component.