Where I live, the nearest ... Basically any sub shop other than Subway is almost an hour away. Also, Subway is one of only two places closer than that that takes online orders; the other is a Chinese place that does take online orders but only accepts cash.
I'm not defending Subway, just suggesting an answer to why anyone would go.
A few years back they stole some much more valuable fast food places from me, and replaced it with Great Value Subway. I was pretty upset, because I could just go to get Subway down the road, since there are like 2 billion Subways, and then Mr. Mike rolls up and is like "Let's make 2 billion more Subways." I don't really want one Subway, so in what world would I ever want two? Give me an A&W or a Long John Silvers or something. Or maybe an A&W/Long John Silvers.