Most of the people do need to find a ways to share files more efficiently, but hardly any sane company would choose Dropbox given their security proposal.

For any given technology or service, given the choice between the cheapest consumer option and a reliable enterprise option that costs 50% more, most small businesses will choose the consumer option every time.

Which would be OneDrive

For me and my company and friends this has meant more realizing the features of things we already paid for (Office 365, etc) rather than paying for Dropbox.

The last thing my free account does is sync my 1Password - and I’ll likely go cloud on that soon anyway

I imagine that sharing files would be the same regardless of whether you are remote or not. Even in a real office people don't usually hand USB sticks back and forth.

I have no data, but more remote people either has 0 impact, or impact on more data sharing online. Lots of businesses still work a lot on paper (think lawyers, notaries, etc) especially while working with clients, and are not forced to share docs differently.