This is a common myth spread by capitalists. They use the excuse of "shrink" to justify 10xing prices, when in reality there was never more than a miniscule amount of that 10xs total value stolen.
If they want people to stop stealing, they need to provide a better product.
To quote one of the more tolerable capitalists "The easiest way to stop piracy is not by putting antipiracy technology to work. It’s by giving those people a service that’s better than what they’re receiving from the pirates.”