The economics of pro sports are dubious. Fundamentally, it is discretionary consumer spending that can be easily redirected. So for example, no Expos, sure, but Montreal has F1, tennis, Osheaga, Lasso, etc etc. It depends heavily on disposable income that is generated by other economic activity. So, economically, does the absence of MLB really matter? It’s marginal at best. Everyone here has been to Montreal in the summer - it’s a busy place, with non-stop events and lots of spending.
Also, economic studies absolutely take indirect and downstream impacts into account. That’s bread and butter stuff.
Building a stadium… that’s a major capital expenditure. But there’s plenty of competition there too… especially public infrastructure and the condo boom we’ve seen in recent years. That keeps the steel, concrete, wiring, hvac and tradesmen going…
To that end, one has to ask what else KC Missouri can do with the money not spent on a facility.