Not at all. Decent service should be expected as part of the price charged/paid, so if you get terrible service, you should be entitled to a proportion of your money back.
If you stayed in a hotel and found that the room was filthy, you wouldn't just accept it and not ask for money back, just because you paid an all-in price and weren't charged separately for the cleaning element
But, people here have said the issue for them is they don't like asking for the service charge to be removed, wouldn't asking for a proportion of the actual bill to be removed (because the prices on the menu are inclusive of service) make it a more uncomfortable encounter for them? I think what threads like these show really is that no one way is going to suit everyone, because everyone has a different stance on it.
If your margins are too tight to be sustainable, you have to increase your prices (or reduce unnecessary costs) to widen your margins. If people then stop coming, you obviously don't have a viable business anyway.
I agree, but, with it being a non necessity most of the time and therefore it's usually disposable income that's spent, at the moment people don't have as much disposable income and so although they may think the price is reasonable for what's on offer, they can't afford it, or can't justify spending it on leisure, so don't spend it anyway, and businesses can't afford to drop their prices to what people can afford or justify.
That unfortunately means less choice of where to go and when if less businesses become viable in this climate and close/don't open to start with.
Global food prices have soared across the board, meaning that the supermarkets can no longer sell goods at the same prices as they did a year or two ago and continue to make a profit. However, they have reacted by increasing the stated prices of their goods, in order to maintain their margins - they haven't just kept the shelf prices the same but whacked on a 'service charge' at the checkout in order to get the extra money they need to take, but in a dishonest and deceitful way.
But if you don't get the service you feel you should, at the check out or from staff on the shop floor, or if you don't interact with the staff at all, get your stuff and use the self checkout, do you expect and ask for money off? If there's nothing wrong with the items you are buying would you be asking for a 10% discount because you didn't get the service element of the price you're paying? People do sometimes get vouchers if they complain granted, but when the shelf cost is inclusive of staffing, you pay it regardless of the actual service you've had.