My understanding is that wages from the restaurant are fixed and tips do not count towards them unless the employee does not hit minimum wage- at which point the restaurant has to pay them more. I have never heard of a restaurant paying an employee less because they got more tips.

But I have never worked in a restaurant so I could be completely wrong.

How many restaurants have $1.9B in funding and are valued at ~$8B? There's also an obfuscation on payment to workers that doesn't happen in a restaurant.