We also got the resort-to-resort transportation survey after our June trip to WDW. I was adamant that I would NEVER pay Disney for this service. I am traveling from resort to resort in order to spend money (at lounges, restaurants, and gift shops). If anything, Disney should offer this service for free in order to promote spending. Disney is just looking to capitalize where they see another company making money from a service their guests require but Disney itself is failing to provide. I'm not normally one to cry "money grab" but this is absurd that Disney wants MORE money from me for a service it should be providing gratis anyway.
And, while it's a bit off topic, every Uber driver I've had at WDW has been a current or former CM.