Also Catalan, and confirming my professional experience in Catalonia was mostly open source, with the exception of a few multinational corporations that preferred Windows and of graphic designers (mac).
I just wanted to point out that you can use Windows 10 in Catalan. The language pack may be installed directly from the language preferences dialog. Support for Office also exists.
In another note, more frustrating for me is how many websites don't respect my browser's language preferences. I prefer Catalan, and English otherwise --BTW if you feel like criticizing this option, which I am completely entitled to, take into account that I live abroad and my kids don't understand Spanish, or the case of people in Northern Catalonia who certainly shouldn't be expected to understand Spanish--, but I keep getting Spanish instead of English when Catalan is not available. We also keep getting ads in Spanish that completely miss the target audience.
Google also really thinks that I will be really interested in contents from the Spanish Wikipedia by preferring it over the equivalent Catalan or English articles, even when it doesn't literally match my search query.
Oh, and my "OK Google" search in Android has the funnies behavior. Let's take a simple question about the weather as an example.
- With Catalan as the search language -> ask in Catalan -> no information about the weather
- With Catalan as the search language -> ask in English -> information about the weather in Spanish. Some of the search UI is in Catalan and some in Spanish, including the actual weather information. Voice response is in Spanish.
So I have to use English, which is fine, but just shows how in terms of l18n we still have a long way to go.