That would cost them more to develop than would be worth and wouldn't even be able to be sure they would sell until it hit the shelves. Especially since they use a specific 3D glasses brand. Also, it wouldn't save them any money as they can't just expect everyone would have purchased something like that... they would still have to provide 3D glasses to the masses.Given the amount of 3D used in the parks, I'm amazed that Universal haven't developed something like this:
Understandably, some rides use different types of 3D but it would be more comfortable for people like you who wear glasses and if you have the option of using the same lense for both eyes, you can also eliminate the 3D effect.
The added bonus for Universal and Disney is that they have something new to sell and profit from plus tiny saving in not having to clean and sterilise the 3D glasses and eventually replace them.
Also, little known fact... Universal literally throws away all of their glasses into a compactor at Shrek and gets new shipments roughly every three months as they are the lower quality glasses.