No need to get very defensive over it as if you are a Razer employee
-Razer always had pretty bad quality over the many years. I find it truly interesting that you would mention Thermaltake's inferior quality to make Razer look good, but I will let it pass
-As far as Kailh vs MX Cherry, you answered your own question. Same design but inferior material. Kailh makes all of their switches so I do not know what would separate Razer from the rest if Kailh manufactures those switches. Yes, it is possible that Kailh uses different facility specifically for Razer products, but if that were the case, wouldn't Razer be better off just making their own switches instead of going through Kailh & paying them commission to make it for them? These switch designs are not rocket-science & the patents expired years ago as you said. It wouldn't cost Razer very much to get their own designs made
-You can usually tell the difference in feel & consistency of the switches if you do A/B testing. I don't own the Blackwidow so ofc I cannot do A/B testing. If you watch some reviews though, you will see mentions of Blackwidow's quality being plasticy & cheap for that cost.
-Ultimate is $130 on Amazon - same or more as other better keyboard using true MX Cherry. You would think that the price would be lower for the customers with Razer using the cheaper Kailh, but no. Razer probably pockets the extra - If you look around, they don't even openly admit to using Kailh switches anywhere on their site or reports. You have to pull off the key & look at the symbol underneath the keys to see a Kailh symbol and put 1 & 1 together. Shady?