Why is this an argument? So push it underground. As a rule, old folks aren't going to take their pensions to Fast Freddy's strip club backroom poker nights. People think that because a law doesn't work 100 percent, it shouldn't exist.
Banning subsidized travel to casino’s alone would go quite far. Similarly banning slot machines from having sound, flashing lights, animations etc would reduce though obviously not eliminate the draw.
Trivially so. People with gambling addictions don't wind up as old folks with pensions.