I think that the vast majority of people do not like calling contractors for quotes. You have to spend time on the phone, wait for someone to show up at your house, wait two weeks, call them a bunch of times to ask when they will have time to send a quote, only to find out the cost is about 3 times what you expected, and the quote doesn't include a few things you specifically asked for.

If a company has a website where I can see an estimated price before I call, that's a huge advantage.