Sure it is temporary and the businesses established afterwards would benefit greatly. However you're discouraging the establishment of new businesses in general

Sure it is temporary and the businesses established afterwards would benefit greatly. However you're discouraging the establishment of new businesses in general if your policy includes not caring about the short term effects. What if that subway needs major maintenance in two years because of a mistake during construction? Why would I open a business on that street if the city has already shown it'll put me out of business to work on it?