Are we saying that we're not capable of hosting two big events in the same year? There would be very little overlap of venues.
Not so much venue overlap, although hotel capacity could be an issue, more lack of national attention, wouldn't make as big of a splash if it's right next to another World Cup we're hosting, particularly with the Women's Soccer and Rugby World Cups being slotted directly before and after the Basketball World Cup.
As for 2031 being too close to the Olympics, that's more from a FIBA perspective, I'm not sure they would want us hosting 2 major tournaments in a row, and will probably been seen as an Olympic warm up event by our media, hell, channel 9 were marketing their warm up games coverage as a warm up to Paris next year.