Of course not., though there's reasons.
Western Michigan is... peculiar. They have all the amenities anyone could have (access to beaches, an amusement park, nature, and a major city with minor league sports, major players in business, and infrastructure), but folks would rather ferry or go the long way around Lake Michigan to other places than take advantage of what they got. Michigan's Adventure is arguably the least visited major theme park in all of the Midwest, for example. Grand Rapids is also one of the most conservative cities in the country, where several major Christian companies (Zondervan being the largest) have set up shop, and there isn't much in terms of forward thinking in the area to encourage free agents in addition to the typical small market potholes. If we're talking hockey or football... perhaps, this could work, but this is a deal breaker for basketball. The TV market is big, thanks to having access to areas like Kalamazoo & Battle Creek, but we are having to combine areas to increase their market share.
As for major employers that could help tie in a potential franchise, yes; they have Meijer (for the uninitiated, it's a retail chain that works like Walmart where there's a grocery store, pharmacy, and a department store all rolled into one with some stores providing additional resources like outdoor landscaping), but Meijer is a regional chain, as opposed to Walmart and Target. And that's about it from a national level unless you want to throw in Amway, and... I feel like Amway and other multi-tiered companies that force folks to buy junk aren't "legit". Regionally, you'd have Spectrum Health as a major player, but health companies don't get involved in athletics besides treatment.
They're fine for minor leagues, but I just can't see the area supporting any pro sports.