I don't think Sci-Hub breaks the loop. Researchers still need to publish with the mini Nobel prizes to advance their career in a highly competitive field, and governments/funders still don't want to dictate where researchers get to publish their work, so in effect, what happens is that governments mandate Open Access and pay the same old publishers significant (and disproportionate) amounts of money to make the single articles they fund openly available. In other words, the costs of research still don't go down, and the government-mandates were happening without Sci-Hub as well...