Producing the DB8e built on work that already had been done and there was little incremental cost as compared to designing a completely new product from scratch. It was the logical progression of completing our bowtie family's conversion to the post-transition channel band, something internet commentators have been complaining about for several years. I guess you can't please everyone.
Do a basic business plan for what you want. Say it costs $50K for the basic R&D and to tool up a production line to build it. Assume that raw materials, production costs (materials and labor), and inbound shipping will run $100 per unit just to get it into a warehouse. Now, for a product that might sell 50 units per year, ask your self the following questions:
1) How many should I order from the factory? Heck, we've got some slow-movers in inventory that have been there for 5-8 years and storage is not free.
2) How much should it be sold for (remember the back-end and support costs and maybe a profit )? Then, listen to the internet commentators complain about the cost!
3) Will money EVER be made from this product. If so, when? How much? Will this project bankrupt the company if it fails?
That's the "real world" math and some of the real word questions that are involved.
Seriously, if there was money to be made, there's be someone making money doing such a behemoth antenna.
Tech support for Antennas Direct