The problem is EVERYBODY is paying for the use of buses whether they are staying at a resort or not. Each resort does not have exclusive buses, they are all part of the fleet.
Well, yes and no.
DVC members are billed for transportation every year. At Saratoga Springs, it comes to nearly $7 million annually (hard telling what it may be next year if gas prices don't correct soon.) On my 150 points at Saratoga Springs, I'm paying $73 this year for bus and boat transportation whether I use it or not.
Given those dollars, it's easy to see why some get upset at any perceived overcrowding by those who are not paying $.49 per point every year.
What we do NOT really know is whether that $7 million covers the entire operating budget for SSR transportation. It's entirely possible that Disney is kicking in additional dollars, which would essentially make this a moot point. If Disney is paying part of the bill, it seems within their right to turn a blind eye to the parking violators if they so wish.
Realistically, yes, we all share Disney transportation that others are funding in some manner. Any guest that rides on the Resorts Monorail is using an amenity that Bay Lake Tower owners are helping to fund. Those who use the boats on Crescent Lake are partially riding on the dollar of Beach Club and BoardWalk owners.
Overall my sense is that we SSR owners probably make out better than many others. Many of us undoubtedly make use of buses, boats and monorails in other parts of Walt Disney World. Even with the parking violators, I doubt that the number of non-guests using SSR transportation outnumbers other areas of WDW.