Not tires, wheels. Tires are the rubber part. Most $12,000 bikes come with race caliber wheels One of the reasons even upper tier bikes tend to come with wheelsets that typically get regulated to the trainer is wheel selection is so personalized. Manufacturers put on low end wheels to not put off a buyer.
I have a bike that's up there in price. To put a fine point on it, I have two bikes that are up in that range, I race triathlons and put a lot of fast miles on my road bikes. That and I work in a shop so not only are those bikes sales tools, but I don't pay retail prices, though honestly it's still not exactly cheap. I've sold a lot of bikes, wheels shoes, helmets, bars and whatnot because people know me, see what I am using. I'm not even a tru podium contender (since I am not a runner) I crush the bike. A lot of conversations start at the shop with "I remember you, you blew by me at..."
Honestly, a 2500 Ultegra equipped carbon bike with a reasonable wheel upgrade (Mavic Ksyriums) is all most people need. Honestly, anything you spend above that point has a diminishing return. I enjoy riding my $3000 road bike as much as my considerably more expensive one.
PS, add in Garmins, power meters, $400 shoes, wahoo or computrainer... It just keeps going up and up.