IMO literally nothing, as long as the analog hole exists. The best they can do is make it more expensive. Requiring an account is one way to do that. Another option is to take the RIAA route and sue everyone involved. Of course they will likely fail, but they can weaponize the legal system against less well resourced companies.
A better idea would be to sell access to the firehose and API at a reasonable cost such that it makes more sense to pay them for this rather than set up a whole scraping farm, aka the Netflix model. Unlike Netflix, they won't be crippled by 3rd parties unlicensing content.
A better idea would be to sell access to the firehose and API at a reasonable cost such that it makes more sense to pay them for this rather than set up a whole scraping farm, aka the Netflix model. Unlike Netflix, they won't be crippled by 3rd parties unlicensing content.