Originally Posted by InspGadgt
As small and as niche as this market is...I don't think it could support another developer stepping in.
Yes and no, depending on the business model.
There is a lot of really good free software out there, developed by highly motivated people, who do it more as a hobby than to earn a living from it. These people are driven by the desire to produce a better product and share it with the user community.
Even a free app with advertisements could potentially generate enough money to cover expenses. If it's a solid product and everyone likes it, advertisers will pay for ad space.