Millions? Maybe not. But depending on your market, skill level, and more importantly your confidence level- you can make a good living.
I started 4 years ago and I’m doing very well. The thing is, photography led me into video work so I I do both and comfortable where I am.
I do a lot of corporate stuff and I charge based on the project. If it’s just photography, that’s showing up, event capture, editing, and delivery. I start off with my base (and that changes from company to company). If Apple hired me, I’d charge more compared to if a 3 person company is doing a meetup.
I also like to know how they are using the materials. Are they going to use it for commercial use or marketing to drive in more business? I’ll consider that too. Of course the increased price will be justified by renting better equipment or hiring help to get exactly what they need.
In all, it varies company to company. I ask what’s their budget and work from there