I have! But in a civilized country, not the USA. I do pay your salary when I go to the restaurant, yes. You are paid by the restaurant only because people go there and eat. Your salary is literally dependant on people ordering food. It is the service you provide, you are not a fucking independent contractor that I have personally hires to serve my table lol. You are on the restaurant’s payroll, same as tech support is on whatever company’s payroll. No tips for one, no tips to the other. A techy gets paid the same whether they spend 5 hours on a ticket and licks the customer’s dick, or if they spend one hour and are complete asses.

The tip is not their salary, it’s an optional gratuity. It doesn’t devalue shit. They should get paid a living wage, and that’s it. That or you better stop being a hypocrite and start tipping tech support as well.

Do you tip for the service for customer tech support or similar customer facing industries as well?

You an make a car super safe, and if someone cuts the brakes cable it will not slow.