Adobe has cancelled the software subscriptions of all users in Venezuela. This demonstrates how a requirement for subscription can be turned into a tool for sabotage.

Adobe revoked the license of some older versions of its applications, and warned customers that they can get sued for using them.

This is further proof that users of nonfree software are in the hands of its developer.

An upgrade package for Acrobat Reader silently alters Chrome.

Adobe nonfree software may halt all other work and freeze a computer to perform a license check, at a random time every 30 days.

Adobe made “Digital Editions,” the e-reader used by most US libraries, send lots of data to Adobe. Adobe's “excuse”: it's needed to check DRM!

Adobe tools require a subscription. Adobe also tried to rip people off by making the subscriptions annual, but that is a secondary issue compared with the basic wrong of the time bomb. When a program proprietary, and even malware, don't get distracted by the secondary issues like price.

(Please don't repeat the marketing term “Creative Cloud” except to express revulsion for it. The term “cloud” is designed to cloud users' minds.)

Adobe applications require periodic connection to a server.

Adobe applications have time bombs: they stop working after a certain time, after which the user must pay to extend the time.

Once there was a problem with the servers that these programs use to check who has paid, and the applications refused to work for anyone.