It's not different, and if that's happening in those industries, it should be halted there, as well. Either that isn't happening (or happening to the same extent) in those industries, it hasn't been brought to the legislature's attention, or, as someone brought up elsewhere, other industries have better lobbyists.

Don't look for me to defend sales taxes in general, they're regressive evils and should be ripped out and replaced with progressive income taxes. But so long as they exist, I'm happy to see loopholes like this closed. Just not closed stupidly.