I remember doing the Charity Commission Welsh language website and analysing the logs in the years afterwards. It would have been far cheaper to stick a button on the website which summoned a Welsh speaker to drive the length of the country to answer all and every query in person before moving on to the next request.
Taking into account the volume of post go-live proving that we did (STW owners may want to look this up alongside the concept of SIT and UAT), it would probably have ben cheaper to fly someone in from Patagonia to answer each Welsh language query.
Welsh is an odd one, as if you come from (or visit) south Wales you would be forgiven for thinking it was nothing more than an inconvenient hour of the school week spent learning a pointless langage and keeping sign writers busy.
If you come from North Wales, especially the rural bits then some schools don’t teach English until the later years, and even then it’s just spelling/grammar, everything else, geography, history, science, dinosaurs, PE, was all in Welsh.
But then if you followed the Generalists line of thinking, we should all just learn Chinese (I know, there’s more than one ‘Chinese’, it’s like saying they should speak ‘British’) as it would save publishers having to translate stuff into English.