Most of the leading ride system manufacturers (Oceaneering, Sally, Arrow-Dynamic, Premier, etc.) are all based in Orlando. None are based in California.
The things you learn here! Not only has Orlando annexed another Florida county, but also cities in completely different states!
Jacksonville, Florida is not in the Orlando metro area.
Baltimore, Maryland is not in the Orlando metro area.
Logan, Utah is not in the Orlando metro area.
Lucky for you I have a very late dinner reservation tonight, so I still have some time to entertain you this evening.
Oceaneering is based out of Houston and Norway, but that's because they are primarily an engineering/robotics firm that creates underwater robots for deep sea oil rigs (Thus, Houston and North Sea). Oddly, Oceaneering are also the leading manufacturer of wireless/trackless theme park vehicles, and their production facility and main office for their ride vehicle division is in Orlando.
(Very unusual story there on that company, worth looking into!)
Sally is based out of Jacksonville FL. I didn't know that, but I knew they were in Florida and assumed greater Orlando. Do I owe you a full cocktail for that mistake, or just a shot?
Arrow-Dynamic. When I just Googled them they're now called S&S after various buyouts, mergers, with Dynamic going off their own way as a separate company. S&S is based in Logan, Utah (where they were when Walt got them to build the Matterhorn!), and the Dynamic team is still based their design and engineering team in Orlando, FL. Zip Code 32809, so actually Orlando, none of that Kissimmee trash!
Premier is based out of Baltimore, MD. I could have sworn that I saw their logo on a building in Orlando (greater) twice when being driven around by someone who was trying to impress me.
But what do I know? Their website doesn't have much info, and only lists a single Baltimore address with no current office in Florida.
Nowhere near its peak, but it still sort of is. Lots of manufacturing and R&D still occurs in the metro area, plus every single supplier in the industry has at minimum a presence there, if not full on manufacturing and R&D as well.
Yes, Orlando is the Detroit of theme park ride manufacturers. If a major firm doesn't have a production facility there, they have a sales office or design studio at least. I'm sure it's gotten weirder and more scattered with the rise of China as a major theme park customer, but there's still a density in Orlando for that industry.
There is no such equivalent for theme park ride manufacturers in the state of California, which was my point.