&gt;  If you have an existing perpetual license, you can use it infinitely, just as the license agreement stated when you purchased it.<p>My understanding of the agreement is that you can use the software infinitely with the version that was available on the last day of the subscription term.<p>As languages and frameworks change, it seems inevitable that everyone who wants to continue working with the latest stable version will be forced to subscribe via the Toolbox (because the renewal of the perpetual license is no longer supported), at which point they no longer own the software they are paying for.