Well, I can't answer for other providers but I can answer for me.  

I had only 1 gentleman request my companionship in Duluth so I will not be making the trip today.  I cannot travel all the way to Duluth to see 1 gentleman.  I have gas, hotel, at least one meal to pay for if I stay just one night.   If I see a gentleman for 1 hour, my touring rate is $200.  Eventhough I can get a very nice room through priceline at a decent rate, it is just not worth the time, effort and overall expense to go that far for just 1 gentleman.   Now, if however, he would see me for a multi-hour date or offer to cover the cost of the room and gas by tipping an extra $100 or so, then I would consider making the trip as my expenses would be covered.  

I am sure you understand.   I would travel to Duluth, Mankato, Rochester, Fargo, etc for 2 (1 hr) dates per day as I prefer to keep things low volume anyway.  Some providers, when touring especially, want to keep a busier schedule and see 3-4 (or more) each day.

Without a sure way to get the extra expense of touring covered, a provider could just as well stay home.

Hope that helps at least a little to answer your question.

Hugs, Belinda