I guess Elektron does what all companies do: outsource certain tasks to keep the internal headcount low.
Also don’t forget in europe you can get business development money from the state and Elektron is quite the successful showpiece when it comes to creative industries.
Though at their current size and history I’d say there definitely are private investors involved.
But who knows? There are a couple of ways to run a company, each one has their own strategy and Elektron seems to be on the rise.