Government? No thanks! Disrupting government contracts must be the last thing on the list of things to conquer. You’ll win the prize eventually but they are the end game big boss that you get just after you get your SOC2 etc.
Mining? Landing a big mining or mineral extraction contract seems like it could be a huge deal. There’s a lot of money in that industry (eg mining, ahem, oil) so I suspect they have their own in house cartogeniuses. Selling mapping software to mining corporations would be a bit like selling docker consulting to Google, I’m guessing.
Agriculture? Small to medium ag would be a nice market to go after. Maybe even target one of the other ag b2bs rather than selling to ag directly. Exit via John Deere acquihire!
Ecology? Academia? If Elsevier are anything to go by then there’s a fair bit of cash there to be spent on institutional software. Maybe you can do a deal with a whole University to provide felt licenses to all staff and students?
On that last point, remember how Facebook started out by targeting college kids? Is there a business pattern for pushing gratis software tools to undergrads so that they then preach them to their new bosses as new hires once they graduate? It sounds so obvious but are there good examples of it other than school kids learning MS Office? “Hey I loved using Felt for my undergrad dissertation — let’s use it here, at my new mining job?!”
Good luck, Felt!