" the chances of being fined are tiny."
If the government was SERIOUS about killing this kind of scam, they'd allow a right of private action like the USA did in the Telephone Consumer Protection Act of 1991 (47 USC 227) - look it up.
Making the callers and the companies they advertsie for jointly and severally liable has had a marked chilling effect on unwanted marketing phone calls in the USA over the last 26 years - mainly because the death of 1 million papercuts is a lot harder to avoid than playing whack-a-mole with regulators.