Yep, it's the main driving force for a lot of people to visit there. The one time I went was because of Disney, Miami Beach was only seen because I was going to Disney.
Living in Asia for years, I know many people from Japan and Korea that have been to Disney World, and it's literally the only reason why they would ever visit Florida.
Without Disney, Florida would just be famous for hurricanes, druggies fighting alligators, and a place to get drunk for spring break---would massively decrease its tourism appeal.