https://www.theregister.co.uk/2019/04/26/us_tax_turbotax/

The United States' tax-filing software industry actively prevents search engines from discovering their free-filing versions, it has been discovered, adding further criticism to an industry that drives Americans toward unnecessary paid-for products.

Internet users, incensed at efforts by the tax filing software market to legally lock-in their business model, have been digging into the actions of Intuit and competitors including H&R Block and discovered that the webpages for their free tax filing software has code to stop search engines like Google from linking to or indexing to it.