Can Myers Corner support new businesses? Restaurants, cafes or bookstores?

It can and does. There has been plenty of local development in Myers Corner in the last decade or so, and what comes to mind immediately is the Summerlin Plaza on Route 376. Lots of new local businesses have come in there, but they're mostly restaurants and the occasional bakery/cafe. Of course, there were a number of restaurants here before that plaza opened, too. There only appears to be one bookstore in the general area of Myers Corner, but it's a specialty bookstore. A new one might stand out and do well.