A discriminatory law needed?!

It seems if a business refuses the right to serve a customer, or acts quite rudely to a customer, it is certainly the right of the business.  Although I don't know when I've heard a Republican conceding that 'the business is always right and not the customer!'  At least every business with customer service always trained its employees to treat customers with respect but not only respect building loyalty and anything else which gains a customer's confidence.  Recent legislation, seems to overtly run counter intuitive to the notion of a free market place and open business, as though gays were like Soviet communists that potentially should be treated as though through having an economic embargo in place, and sadly this weren't a deal in which the markets were foreign but entirely of a domestic nature.  Sure, I've personally encountered at times rude employees at a place of business, and understandably my customary response were to never return.   Of course, there is no law needed usually to protect businesses in hiring rude employees or for that matter a business owner that treats people rudely because they dislike someone for whatever prejudice.  Although typically doing so, much to the contrary in the past, as is likely today, might actually imperil a business in so far as customers.  Then those that choose not to serve customers because of some inherent dislike for a customer might find a customer understandably complaining to the Better Business Bureau, and if word were to get out about systemic treatment, it seems a business suffers, or likely if the business is just flat out poorly run in so far as the treatment shown to customers, why should there be laws to protect such business, and what can the law really do other than at face value we support you for the right that you supposedly have, but in essence comes across as 'bad business'...the law can't force customers to shop at this business, even if the business manages to set up shop with a fail job of a business.  It seems the law is some how urging the American people to respect a business?  Why?  A business that is composed of people, and not defined as a person alone?  And what obligation do customer's have of such business if they rightly choose not to shop at such business?  Again the question arises, 'Why is a law needed to protect discrimination in the first place?'   Laws such as these seem to evoke not only the sorts of widespread cultural practices found, for instance, more commonly in the American South in previous decades in so far as discrimination, but also entails something of an absurdity.  Customer's don't have to respect a business because of  business leadership deciding that it openly supports a specific type of customers it chooses to support or not support, and what exactly is there gained in such a process?

Then absurdly this also brings up another notion which is that businesses are somehow obligated to serve something that they don't want to serve, and thirdly as though businesses were under duress from religious persecution for choosing to exist in a public marketplace manner.  I suppose I as a musician an album could whine and cry about being discriminated against for the failure of sales in my album, and maybe a law is passed saying the state protects my right to beliefs, but did it help my sales?  I suppose I could cry out online for bigoted philanthropy welfare!  Lastly its hard to imagine gays walking into a business and launching a lawsuit for poor service, or being refused service.  I am wondering where public tyranny is occurring for the persecuted persecutors here, or if this isn't ever more reason to be cynical of b.s. political stunts pulled in defining discrimination for what it supposedly not?