Even if I go to the same coffee shop and use the same Square every morning, unless I'm holding a grudge it's de facto back to front end tipping rather than upon services rendered.
The tip at purchase time paradigm is in many cases an artifact of integrating credit card workflows with cash businesses with established pay up front and tip after workflows (fast casual dining, etc.) If you are against it and not against tipping, just bring cash for tipping and tip on the back end.
Because they almost always do and it's illegal for the owners to keep it?
https://www.huffingtonpost.com/entry/restaurant-chains-hit-w...
https://www.phillyemploymentlawyer.com/wage-theft-epidemic-r...
https://www.epi.org/publication/employers-steal-billions-fro...
https://www.restaurant-hospitality.com/legal/la-restaurant-p...
https://www.eater.com/2018/9/25/17886990/how-restaurants-ste...
Not really worth it. I'm not saying it doesn't happen, but the calculus is so bad that it's extremely rare to happen at scale. Especially if there's a digital trail run by a third party...
I can understand why you might think it never happens if you are completely ignorant of the facts on the ground but nevertheless familiar with the criminal and civil sanctions involved. It's about lack of enforcement.
https://www.phillyemploymentlawyer.com/wage-theft-epidemic-r...
https://www.epi.org/publication/employers-steal-billions-fro...
https://www.restaurant-hospitality.com/legal/la-restaurant-p...
https://www.eater.com/2018/9/25/17886990/how-restaurants-ste...
Obviously, none of these are scientific studies but I don't know if there are any done in the industry.
What I'm trying to point out is: Wage theft of all types happens all the time and I've known people too poor to risk losing their job who suffered under this issue. I'm sure it doesn't happen often -at scale-, in chain restaurants with big corporate backing but in an industry where most close after their first year and the workers are frequently undocumented or transient. It happens.
However, pretty quickly us workers discovered the math wasn't adding up. We would pool $300 of tips for the night and only have $200 equally distributed to us. When we asked the owner, he would say something like "you must have added wrong" or "the receipts only show $200", which was bullshit. After that happened, us workers made it a point to always make up an excuse to the customers why we couldn't handle electronic tips, and then immediately pocket the cash tips and split them ourselves.
Fortunately, most of us left before the owner caught on to the point of becoming confrontational (it was a short job before university). Moral of the story is some guy in his mid-40s, who made enough money to drive a BMW, felt that he could deceive some young kids because he had the chance. In hindsight, now I know more about things like labor laws and enforcement hotlines, but at the time most of us were also being paid under the table (which we didn't even understand because this was our first real job) and were scared of having to face the IRS and lose the money we made.
What bothers me is the ACH networks still get their cut of the tip (assuming they get a percentage of sale and not a flat rate). No visa, you don't need 5% of the waitress hard work.
The reason that vendors accept credit cards is because it's usually worth the additional costs. If you don't think your credit card processor is worth the cost, try dropping them and seeing how it affects your sales. In some instances, vendors have dropped processors entirely (like Amex and Discover) without noticeably impacting their bottom line.
I don't understand why people (buyers) are so thin-skinned about this. Leave a tip or don't. Whatever.
If you get good service, will good tip ensure a good experience the next time around? If someone gave you bad service, do you make it known? I think most would prefer not to say anything.