> Everything we do at Vy is done in close collaboration with the customer.

To understand this correctly; 'we' means the company 'Bekk' and the customer is 'Vy', right?

I don't find it too strange that it is relatively easy to onboard new Elm programmers when they are part of the same company. But what happens when competing companies want to bid for jobs at Vy? Vy is after all wholly owned by the Norwegian Ministry of Transport and Communications, so new future contracts are bound to come up. A language decision like this–beyond the merit of the language itself–might create a vendor lock-in that can stifle competition. Without being an Elm programmer myself, I am not sure that the technical merits of Elm is really worth it when taking the competition aspect into condsideration.