Earlier quoted context omitted.
That doesn’t work very well in practice because a half vacant commercial property has lower property value than a full one. There are buildings that seem to purposefully keep commercial space vacant to devalue the building: https://therealdeal.com/chicago/2021/09/10/trump-gets-anothe...
Property tax isn’t based on vacancy rate, it’s based on property value. The article writes a bit about property value being based on rents. So a completely rented building pays the same property tax as an empty building with no renters.
Where I live (NC, USA) there was a big issue where commercial property owners have been able to reduce their property tax assessments, not on the basis of 'comparable sales' (like everyone else), but on the basis of the income derived from the property.
I can't say how widespread this practice actually is, but it's not unheard of. Apparently property tax rules are going to vary widely by jurisdiction, which country / which state or province / etc.