The government is anti-piracy because they're paid to be anti-piracy. I hate to sound like a conspiracy theory nut but the capitalist countries are run by big businesses and not the government. People in power are always bribed to sway their opinions and push their power.
The perfect and basic example I can use is my state's Anti-gambling laws. Gambling brings in lots of revenue and tax dollars, but why has Texas banned casinos? Thats because the businesses in Oklahoma bribe Texas officials to be against gambling. Oklahoma's Winstar Casino is like the 3rd largest casino in the world, and it's literally sitting half a mile past Texas' border on I-35. If any North Texans want to gamble, thats where they flock to. Even though its in Oklahoma, Texas' rival state, The Oklahomans are outnumbered by the Texans.
Just like that scenario, industries are bribing government to act on these antipiracy laws. In some aspects piracy has no effect on an industry. In 1999-2000 there was this whole anti-napster thing, but it turned out people downloading MP3s for free didn't affect record sales, but instead they were still thriving. Personally I think its an ego thing, there's no evidence piracy has any affect on software, music, and movie sales. Regardless of piracy, movies like Toy Story 3 and Indiana Jones 4 breaks the 100 million barrier and still sets some sort of record. Dragon Quest 9 and Pokemon (A remake no less) sell like 10 million copies. And the music industry has already found a way to work with downloaders instead of acting against them. I honestly believe that piracy is harmless and that the people who fight it need to stop spending so much to fight it, and spend more on ways to profit from it.