Debt, especially low interest debt, is not a bad investment if it is used to grow the company. Since content is the only differentiator in the streaming market, this looks like a good investment.
An IPO is a form of taking on debt but issuing more shares is not the only way to take on debt.
If no debt was required to grow the company and be profitable, the company could have stayed private. Of course this doesn't work because early investors want to see some returns after 5-10 years and an IPO is the obvious way to cash them out.
https://www.barrons.com/articles/netflix-is-borrowing-anothe...
That just changed last year.