On paper conscription is fair to all, but in practice you end up with scenarios like “I have dual citizenship and opt to live abroad” or “My family doctor has declared me unfit to serve because we bribed them to say so of my medical history which I can provide records for” or “Yes I am planning to attend university for the next 10 years, so I am eligible for deferment until I graduate.”
I don’t know what the policy is like in Finland, but if a loophole exists, the rich have the means to find it.
And even when some rich kid does end up getting drafted, it always ends up being that strings get pulled and they land a really cushy deployment like being a logistics officer somewhere nice and safe, or a secretary for leadership. Never seeing active combat.