Quite often the public infrastructure (at least in some EU countries) is funded in the way so that the investors give the funds and then a small fee is collecte

Quite often the public infrastructure (at least in some EU countries) is funded in the way so that the investors give the funds and then a small fee is collected and used to pay for the loan and maintenance. Sometimes after the loan is fully paid the infra usage fees are waived. This is something like commercial open source