Title: Longtime HNer on a throwaway account.  I've just started work on a startup making a web app for a particular type of business.  (Sorry about the intentional vagueness.)  There's something like 5000 businesses of this type in the U.S.  With subscription billing, if the average customer is paying $25/month, I'm looking at a <i>total</i> market size of $1.5 million/year.  Granted, maybe there are additional apps I could build in the same domain, and other unknown sources of revenue, but I'm starting to worry about potential for growth.<p>Am I overthinking this?  Have any of you launched companies into markets of similar (or smaller) apparent size?  What problems am I going to run into, and what's the best way around them?
Upvote: