you're kind of thinking is the reason a chunk of the US population doesn't vote. You think "one person doesn't make a difference" and you don't try to do anything. you're not wise, you're lazy.
Actually my reason for not voting is because I'm not a Canadian citizen. Keep up your one man boycott crusade because I'm sure the managers are losing huge chunks of their paychecks because of it.
Also, the managers views aren't going to effect the way the food tastes, or the way they expand their business. On the other hand, a politician's views are going to change the bills he passes, where taxpayers money will be distributed, and stuff that actually matters.