In a recent Sky and Telescope there was an article about a homemade ultra fast Dobsonian Rich Field Telescope. It is a small gem at F 2.8 with a 6 inch mirror and very portable. There is only one problem, you have to build it yourself.
There are 8 inch 11 inch and 14 inch SCT on many pages of the magazine. You would think that there would be a market for this gem of a scope. So why doesn't a leading manufacturer like a Meade or a Celestron build a scope like this for the general public? It would be niche marketing since there is nothing like this for sale that I know of.