Re: For how long will the MCU go?
Like you said, it depends on how successful it is going forward. It seems inevitable it'll be rebooted at some point. My feeling is that Marvel Studios is just scratching the surface from both a creative and financial standpoint. I'd guess that we'll see this universe go to the end of phase 4 at the very least.
There are more things in heaven and earth, Horatio,
Than are dreamt of in your philosophy