Just to be clear, Free File Fillable Forms is not run by the IRS, but by a private-sector vendor that is part of the Free File Alliance. I believe it's been run

Just to be clear, Free File Fillable Forms is not run by the IRS, but by a private-sector vendor that is part of the Free File Alliance. I believe it's been run by Intuit and H&R Block at various points, but the current provider seems to be one I hadn't heard of (OnLine Taxes). I don't know the full chain of events and obligations, but my understanding is that there's an agreement in place that the IRS will not provide an in-house e-filing solution for individuals as long as the Free File Alliance continues to provide the Free File program (including Fillable Forms).