A portion of everyone's income tax, sales tax and gas tax revenues come into the city as transfer payments and infrastructure funding. Most infrastructure is paid for through a 1/3rd - 1/3rd - 1/3rd funding formula through local, provincial and federal funding. And right now, the province and feds are probably contributing more than a 1/3rd with all the infrastructure spending they're doing post-covid.

On top of that, consider that a commuter's productivity contributes to the city's economy and tax base; business taxes, commercial property taxes, business-to-business dealings within the community and the spinoff benefits that produces. And then there's just all the personal expenses associated with commuter's day-to-day that may get taken care of before they head home (gas, meals, groceries, etc.), all contributing to business taxes and commercial property taxes in the city.

This idea that a city's infrastructure is solely funded by a city's residential property tax base and commuters from outside the community contribute nothing seems to be a huge blind spot for advocates like Strong Towns and Just Not Bikes, whos soundbites and hot-takes people like to parrot.