The more I look at and think about this, the less useful I feel it is.
What does it really do that's different from a stove top and pan? It cracks the egg and drops it into the pan - nothing else that I can see.. I do have limited mobility. I would still have to get the egg from where I store them, drop it into its position, find my frying medium of choice and put that into the pan, then when the egg is ready get the egg out of the pan and onto the plate.
One egg. And not cooked to my preference.
On the stove top, I can simultaneously cook more than one egg (to my preference) with the only extra exertion required being the cracking of the eggs - not the most difficult part. Then I'd need to clean the pan just the same whether using this or the stovetop. The stovetop would be easier to clean, too.
I'm not saying there isn't a seed of an idea there, but it needs a lot more thought.