Well....... let's see....
To be able to be in this business you have to be a.....:
- Computer graphic artist
- A Sales Man
- Good at accounting
.... and so much more....
Let's face it. It is hard beeing good at everything. So if your wife believe she can sell virtual tours so you can focus og taking the pictures and building the tours?? What's keeping you from doing it? Go for it. Give it a try.
Now comming back to your question. Yes I know a couple business owners who do not do everything them self.
1) mike from http://www.newspin360.net/
He's most of all a sales man. He also takes the pictures, but have someone else process them and build the tours for him.
2) Steve at http://www.vizmark.co.za/
I personally believe that the biggest challenge for most of us is that we aren't sales men. You have to be to survive in this business. So if your wife is up for the challenge you'll have a great advantage.
BEst of luck to you
p.s. you should also start a blog about it :)