My internet costs are fixed every month (if we are talking about home internet), and let's say that they are not too expensive considering it is a flat internet (no data limit), and that speed is around 40 Mbps. The price for that internet and fix phone is around 20 EUR per month. Considering that I spend a lot of time online, I find this price very good and currently it does not represent a big expense to me in my home budget.

I know that internet prices are different, and some countries like Cuba have very expensive and limited internet so your question makes sense. But I still think that the majority still pays too expensive and limited data + slow internet. This is certainly one of the most significant obstacles to a major BTC adaptation, as well as the fact that almost half of the world's population has no access to the internet. Welcome to the 21st Century