Edit: to clarify, my then-precaffeinated brain thought this meant for a single map at a time (like a PDF), not something that gets continuously updated
If you want a bunch of data no one else has, you’re entitled to charge for it. From looking at their site, they’re a historical/statistical map provider which is data that you won’t find through Google/Apple/OSM’s public data.
Another modern example, back country and overlanding routes. There's a decent amount of work and danger that goes into it, and not enough public interest for the big dogs to warrant mapping out the paths-less-traveled.
I get GPX routes and roll maps from TAT and BDR because these trails are not even on OpenStreetMaps.
Yes, there's some old stuff archived out there for free, but it's very limited and hit or miss. People who have collected a decent digital archive of things you would have found in a library decades ago deserve to make some money for their service.
Not really a new thing. Before GPS was in everyone's pocket, you had to get specialized devices. The companies that made those generally gave you 1 free World Map download (or in some cases only your region for free), but future updates or expansions to it would cost a non-trivial amount.
I'm honestly surprised that one of the big players hasn't tried to offer some sort of premium map subscription now that I think about it, though.
ETA: also, physical maps and atlases could be purchased on subscriptions through mail-in stuffs before the internet
Mapquest was revolutionary for offering free driving directions where previously that cost money and was usually only worth paying for on major road trips. Google took that and supercharged it by offering free directions on your phone, joining a growing list of products where they took something that used to cost money and offering it for “free” in exchange for all your information.
Yeah fuck that! They should instead provide the maps for free but inject ads into them. Looking for the kingdom of Ma-i? Well now it's right next to the Sultanate of Squarespace.