I think this is just too many people. No matter how you spin this it’s just too many. Do Google or Microsoft have half as many working on their browsers? I’d be very surprised if they do. It should also be interesting to look back and find out how many people Netscape employed at its peak. I would love to know the distribution of those 1.2k people ( engineers, marketing, whatever ). Of course, it’s likely that I am t…
Comparisons with the past are meaningless because browsers are far more complex (and performant, and secure, and versatile, etc) than they used to be.
And sorry, but your gut estimates are not likely to be that accurate if you don't work in this area.