The R&D point doesn't work for me unless it's a software inclusive device or a company that evolves new products to market, which is really just the controller companies.
Skimmers rarely change, sumps never change, I wouldn't really consider going from suction cups to magnets much money spent on R&D. Most products are a static thing that does a specific purpose.
The degree that most products change is very small. Basically there's very little R&D involved and more so a new coat of paint to make it appear different.
Also, if prices DID drop after a year or two, that would give a company like Ecotech or Neptune (another example) much more exposure to all walks of the hobby. Would you rather sell a few products at a high price, or many, many more with less of a return?
It's like the
eBay philosophy... Selling millions of products with a low return makes much more money than selling a few at a high return.
There are a lot more hobbyists than people think. If you make it easier to get your products into as many hands as possible, while being a reliable brand, you will do better over the long term. Especially for company's with low R&D costs on products that rarely change.