Not exactly right.
WDW's occupancy was 90% as recently as 2008. WDW's lowest occupancy ever was 75% in 2002. In 2013, occupancy was 79%, but that number was inflated by DVC, which has added 1950 rooms since 2002. Take away DVC and WDW's hotel occupancy was around 76%. WDW also has about 4% of its rooms out-of-service. Take that into consideration and about 72% of WDW's hotel rooms were occupied in FY2013. (Note Disney's fiscal year runs October to September.)
Excluding WDW, the Metro Orlando area occupancy was 71% (pulled down by the North Orlando area), with the nearby Lake Buena Vista hotels running at 78% in 2013. WDW's hotel occupancy rate currently is running below local hotels.
There's one reason and one reason only that WDW's occupancy rate is lower than Lake Buena Vista's: price.
Disney's plan to convert WDW hotel rooms to DVC is not indicative of a healthy hotel business model.
I just realised something when I read your post about occupancy rates in the context of this thread. And I think it might be a further reason for the trend towards having DVC at every deluxe resort.
Some time ago, I think December 2012 when they published the annual dues for 2013 one of the explanations given for why certain resorts have a higher percentage increase than others was: the reason how shared resorts calculate the DVC share. One would think it is calculated by number of rooms or beds or something like that. No, it is actually calculated by number of guests. So the total number of guests staying at the hotel vs. the total number of guests staying at DVC. There appeared to be trends of certain resorts attracting larger groups in the DVC rooms, especially once the secret was out about the AKV one-bedrooms having beds for 5, not four. While other resorts seem to have become more popular by couples and hence have a smaller DVC load.
Of course, the DVC load will always be very high due to the nature of the system. So, if you have a DVC at the hotel, in times you have problems filling your room, you have someone else picking up the tab - since the ratio of hotel guests to DVC guests will shift in the way to put more of the expenses onto DVC. Very smart!!