We're not some antiquated 19th century pseudo-theocracy, catering to right wing ignorance and badly informed religious bias.
Funny thing - those companies, like Chick-fil-A that have come out against same sex oriented individuals? That hasn't worked out well for them financially. So, by all means - boycott away. It won't make any difference. Opposition to marriage equality is losing; it's just a matter of time, a matter of what is fair and right (not right wing).