The problem is software isn't tangible. Something like an algorithm is different. It's mathematically provable. The vast majority of software patents are based on preexisting concepts such as the patent IBM was awarded for "Resolution of Abbreviated Text in an Electronic Communications System", which is a database that looks up abbreviations like netspeak and fills in the full word. Or Google's patent for "Variable User Interface Based on Document Access Privileges" which shows something different on a webpage based on your geographical location. Something websites had been doing for years. These frivolous software patents by major tech companies are predatory and stifle innovation. They know the patents won't hold up in court, but they can afford protracted legal battles startups cant and use that leverage to strong-arm smaller companies.