Oh you can do that in Finland as well. You just need to have an extra brake pedal installed on the passenger side, for emergency braking. You also need an extra mirror, and a permit to teach. The requirements for a permit to teach are nominal, it's just that you have at least 5 years experience with the class of vehicles you're teaching (as you could teach a BE as well for instance, not talking about installing extra brake pedals on motorbikes lol), you're at least 25 years of age and have a "clean driving record". I'm not sure what disqualifies one with the record. I think it's probably somewhat subjective. Like a DUI definitely disqualifies you, but some minor speeding prolly won't.

It's been increasing a lot here. Like when I learned to drive I knew of no-one in my age or near it who'd done it. But my sister is 15 years younger and when she did it my stepdad (her dad, she's my half-sibling) taught her. It's doubled since 2014.

And I think the driving schools have less theory and driving lessons as well, we had tons. Probably dropped it so that it's faster for the schools to get more people in and out. Ie capitalism loosening safety regulations in the name of profit. Thanks, right-wing government of however long ago it was! ^(/s)