Here is what you are not taking into account:
Disney DVC are sold to the members. Once all the property is sold than Disney gets all of its money back plus the profit. Till than Disney rents rooms and makes money off them at that time. So DVC builds a resort and in 5 years it is sold out. Disney gets full return on investment in a short period of time. Disney in order to keep people on WDW wants as many resorts as possible. The more people that stay on property the more money that Disney makes. If Disney had to build all new resorts with Disney capital it would tie up funds for a much longer period of time.
So here is the simple answer:
WDW in order to make as much revenue as possible wants people to stay on property. People staying on property send more at WDW in total than those staying off property.
Disney uses other peoples money (DVC members) to build some of the resorts needed to keep people on property.
Disney than has additional capital (from the profits of people staying on park and not investing Disney money in the resorts) to send as it likes.
Disney (not DVC) sends that money on the parks, ABC, ESPN, movies, etc. in order to make more profits. At this time it is not spending as much at WDW as other parks. It is making massive investments in expanding Disneyland Resort and Hong Kong at this time. It is also building a new park in Shanghai.
Disney Vacation Club is a cash cow for Disney and that is why Disney wants to expanded it as quickly as it can find new members.
Disney DVC are sold to the members. Once all the property is sold than Disney gets all of its money back plus the profit. Till than Disney rents rooms and makes money off them at that time. So DVC builds a resort and in 5 years it is sold out. Disney gets full return on investment in a short period of time. Disney in order to keep people on WDW wants as many resorts as possible. The more people that stay on property the more money that Disney makes. If Disney had to build all new resorts with Disney capital it would tie up funds for a much longer period of time.
So here is the simple answer:
WDW in order to make as much revenue as possible wants people to stay on property. People staying on property send more at WDW in total than those staying off property.
Disney uses other peoples money (DVC members) to build some of the resorts needed to keep people on property.
Disney than has additional capital (from the profits of people staying on park and not investing Disney money in the resorts) to send as it likes.
Disney (not DVC) sends that money on the parks, ABC, ESPN, movies, etc. in order to make more profits. At this time it is not spending as much at WDW as other parks. It is making massive investments in expanding Disneyland Resort and Hong Kong at this time. It is also building a new park in Shanghai.
Disney Vacation Club is a cash cow for Disney and that is why Disney wants to expanded it as quickly as it can find new members.