I feel bad economies bring the best out of Internet Entrepreneurs. It forces them/us to do the necessary market research, planning, and cost effective operations management.
Our company runs an internet business that targets the Automotive Industry. With this industry being hit hard by the economy we have been forced to expand our product line. It has opened up many doors in very profitable business sectors…the bas economy almost helped us.
So to answer your question I think any business that is well planned out can survive. Our internet consulting company goes after multiple NICHE INDUSTRIES. Developing software that can be used over & over (with little modifications) has helped profitability as well.