Texas Instruments signing key controversy

I really, really wish there were an open source graphing calculator to compete with TI, given how Apple-like they&#x27;re going with their lockdown of it. (And NumWorks is not one: <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=29681360" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=29681360</a>)

So if I am reading this right, they sent out fraudulent DMCA takedown notices and faced no repercussions for doing so?