Yes, I can't remember seeing a bathroom or laundry here that didn't have a floor drain. Seems insane for that to not be standardised. I briefly lived with a bathroom in the UK that was carpeted?!
i briefly lived in a house that had second floor laundry with no tray or floor drain. the first day after installing a new washing machine it flooded and did over 30k damage to carpet, drywall, and installed electrical. Insurance would not cover installing a floor drain or tray, and the owner chose to let that decision stand.
