You're a Brit, so maybe you don't know about tipping.
In many countries in the world, a tip of around 20% for service is considered normal, even obligatory. In theory, if service is indeed not "up to your standards", you can leave nothing at all. In practise, almost everyone tips at or near the generally accepted level.
People could use your "pathetic excuse" to never tip, but they almost always do. Hell, I'm not even a yank, so I've got another excuse not to tip - "that's not my culture!". But in America, I always tip, 20% on the dot. Social pressure wins every time. So I bet that even if paying for restaurant meals was "optional", you'd still pay, unless you're some kind of sociopath who isn't capable of noticing or caring that people hate them.
I have had access to pretty much any music I want for free since 1998. I still seem to have a lot of CDs. Basically any band that makes it into my "A-list", I go buy all their CDs. Why? I don't know. There's no economic advantage. A pride thing, a social pressure thing, a status thing? You tell me.
I've had a DVD burner since the early 2000s. There has been nothing stopping me burning my own copies of DVDs, for a marginal or zero cost, since then. I have actually never done this even once. Why? Same as above, I guess? And I don't want to look like a cheap-ass loser to my friends. Or myself.
Why am I mentioning these things? Well, I just think your worldview is too black and white. There is not a sharp line between good paying customers and illegal thieving pirates. It's more like a gradient. Plenty of artists where I only have their "good" CD. I've got the rest of the albums on mp3, they're just not worth spending the $30 on (or, these days, storing the damn things forevermore - almost more of a factor!).
Similarly, I own a number of, say, iD software games. There were some shitty ones, and I never bought them. They just didn't deserve that vote. But I'll pay money for games I like, no problem at all. I'll pay a LOT of money for games I actually want. In fact I've previously said on this site that I'd pay pretty much any reasonable amount for remakes of some of my favourite games, say Marathon 2 or Final Fantasy 7. If there was a PS3 with FF7v2 in ROM and useless for anything else that costs $1000 and that was the only way to get it ... I would buy that in a heartbeat, lol.
So it's complex. Your worldview seems to be about a binary world of "filthy thieving callous dishonest pirates" vs "angels who can do no wrong". In reality, everyone I know is a mixture of the two.
Which am I, angel or thief? I own many more CDs than average. But I've "stolen" many more times than that again. I probably own 10 times as many games as the average consumer. But I've pirated 100 times more. But I've given the industry thousands of dollars! But I've stolen many times more! Which is it?
Grey. It's a word, it's an area, it's a colour, it's a point on a sliding scale between black and white. Turn up the bit depth on your display of the world, maybe you'll start to see an awful lot of it.