I feel like this is key. I've been an entrepreneur for the first 10 or so years of my professional career and have had multiple businesses that I started out of the first one because I had so much flexibility managing my own time. Due to a number of circumstances I've been working away at a corp office for the last 3 years and only now I realized how hard it is to do anything "on the side" after spending most of the productive hours of the day in your boss' office.
I know, I know, I could bring my personal laptop and take long breaks throughout the day to work on side projects but aside from any moral considerations it's practically really hard to schedule calls, trying to not get noticed, being kicked out of meeting rooms, etc. In my mind, being able to work from home and set your own schedule is such a huge plus to kickstart a side business/project.