[emitstop]

You're confused on the definition of startup. https://en.wikipedia.org/wiki/Startup_company

Generally newly created, but not necessarily. In 'The Lean Startup' by Eric Ries one of the primary examples is based around Intuit, which is a large publicly traded company.

[amscanne]

I sure hope a company has a scalable business model before going public. Then again, Twitter?