[carlosjobim]

> If you're very successful and saturate your market, why build new versions?

I don't think you can ever be saturated in number of customers, if you have a good thing and are on the right track, the moon is the limit. You build new versions to increase the user base.

If you're in a niche market that can actually become saturated, then your customers are likely professionals and willing to pay much more than consumers, since they make money from your software.