[webmaven]

> So the use of C# dooms my startup? I feel really out of touch having never used python or ruby.

No. It may even be an advantage for some verticals such as finance, and some business/deployment models like on-prem enterprise software, especially if being able to fit seamlessly into a customer's existing Microsoft setup would be a major selling point.

That said, if you find yourself contemplating how to scale your Active Directory and SQL Server deployment[0] to accommodate your growing user base of personalized emoji GIF makers, consider that your prior experience with your chosen platform may have led you astray somewhere.

[0] Apologies if the metaphor lacks punch, my experience with the MS stack is a decade or two out of date at this point.