Profit is good for everyone. However, using the legislature to protect one profit over another profit, to the overall detriment to the buying public is bad. Look at the airline industry. Strong, and costly protected mode right up until deregulation. Now, the industry is fluid, but you can still buy a 1st class ticket, go in style, arrive ahead, and pay for that, or you can fly Spirit or JetBlue in steerage. The market is liberated, and that cost PanAm it's business cause they didn't or wouldn't adapt, and the consumer said they needed to.
Look at how open and liberated the internet market is. Companies come and go, there are three or four reliable standards, there are companies getting fat, and some dying and being replaced, there is turnover, and there is robust activity. Start regulating it, and stagnation will begin. Same with the dealer network issues.
Here's a page directly from the DMV of Texas re being a dealer:
Texas is a very big state, and reliable vehicles are a necessity for getting around its wide-open spaces. With so many Texans owning motor vehicles, the auto sales industry boasts high-volume turnover.
To regulate this trade, the state subjects Texas automobile dealers to many legal restrictions and requirements. Number one among the requirements is that you fill out application forms―stacks of them.
The Texas Department of Transportation offers a dealer manual, and a dealer an Independent (GDN) Licensing page that will help you understand all requirements and regulations.
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In addition to the forms to fill out, there is a bond to buy, and fees to be paid. The total comes in about $2000 to get started, before you even put up your name on a sign(which has tight regulations as well).
I don't see much value in the state car dealer restrictions, and certainly not sufficient value that they should be protected by state law. Consumer protection can go overboard if it looses it's 'consumer' theme, and becomes a protection for the distributor, which is the case in the auto dealer miasma.