I used to work in internal IT at a Fortune 500 working with different departments in the company to turn Excel spreadsheets and Access97 tools into web apps with real databases. The problem is that the companies/departments where this is the case all have their own workflows and business processes, and 99% of the time are completely unwilling to consider change. It'll be really challenging to develop software that can be sold to multiple companies even when they ostensibly do the same thing.