Software isn't the only investment they do though. They also invest in electric car companies (which prompted Musk to threaten to go private), companies that do

Software isn't the only investment they do though. They also invest in electric car companies (which prompted Musk to threaten to go private), companies that do major infrastructure/construction, industrial manufacturing, virtual reality and machine learning, chemicals and materials, aerospace, etc. Not using an app is easy, but if you really want to escape them you'll have a fairly hard time doing so. They even own 25% of Arm Holdings, so better toss that cell phone and tablet.