Forcing everybody to use the latest versions is as anti-user as forcing them to use versions from 5 years ago. What people want is to develop and run their app

Forcing everybody to use the latest versions is as anti-user as forcing them to use versions from 5 years ago. What people want is to develop and run their applications with the least amount of friction possible. That is the purpose of the operating system: make it easier to write and run applications. Anything that gets in the way of that is bad. What containers and other forms of virtualization provide is enhanced ability to deploy and run applications cheaper than without it. Linux kernel and modern networking is incredibly sophisticated and Unix design of the past can't allow people to take full advantage of it in a reasonable manner. This is why they switched to containers and virtual machines. Because, frankly, running one Linux operating per application actually makes more sense than what people were doing before. Package management systems, no matter how sophisticated, can't solve these problems.