Let's entertain the notion, prevalent here, that this idea itself (like all ideas themselves) is worth absolutely nothing, and that any one of the teams in the world who have access to gyroscopes, servos, and microchips, should have the right to reproduce this hack at unit cost and drive these guys out of business. Its cost is listed at $295.00[1] and this is their only product. It's huge compared to what the best fa…
Let's say they didn't have a patent.
You'd need a significant investment, so you couldn't produce it at unit cost.
There's development. A good engineer costs what ... 200k? Including stuff like taxes, overhead, etc. Let's say you need several (because there's the control systems, hardware design, casing, manufacture, etc). You'll need supplies.
Then you'll need testing, legal, etc. You'll need to set up manufacturing (China? A US shop? Let's assume you're not building your own plant).
Complete ass-pull guess - it's $10 million to bring a clone to market, in the US. It's a medical assistive device (is that the right term?) - you can't do it cheaply and legally.
So there's ~600k (~1/500) people in the US with Parkinsons. Maybe 10% want your spoon (because there's other spoons, or some have treatment that makes your spoon useless, or they are too stubborn to use it, or they just don't want it). That's 60k.
So you're looking at maybe $160 overhead per unit. Add $50 sales cost, and $50 to manufacture it (medical device), and you're not looking at a cheap spoon.
Yes, going international could make it cheaper. Presumably, the company selling this spoon will also get cheaper with time.
I'm also sure that even with patents, there will be clones. People will come up with similar ideas, and make them just different enough to squeak past, legally speaking. But given the high costs of developing assistive devices, it's not going to be profitable for every man and his dog to make a clone. So you'll go from a monopoly to a near-monopoly. Just because there's some competition doesn't mean that the price will dramatically drop - you need a lot of competition with identical products for the price to go to unit cost.