Wow, looks like every single statement is wrong. Most dentists are running at least 3 chairs so you’ve got the count wrong. Drills don’t last that long. X-Ray machine technology keeps improving so they wind up needing to be replaced, it ain’t 2 dollar composite and you’ve studiously ignored the staff they need to pay the insurance and the building.
It’s really cute how dedicated you are to your fictional beliefs. But you’re wrong across the board.
Three seats so they can steel three times as fast. If the x-ray was good enough this year and it still works, why replace it. Few actually do until they need to. Chairs actually do last for decades, even if they have to be reupholstered the cost is a couple of root canals. You act like the dentist buys new stuff every day. He doesn’t. He also is making money on every member of his staff. He pays his hygienist so he can do more root canals. Dentistry the new Cosa Nostra. Fraud in a white coat. At least they are less cavalier about it these days, they now where a mask and gloves. Keep drillin’ Dr.