The systems were in place to support the new process. The new systems were not operating properly.
Many operating systems are "old", and many are new. Without specific systems to compare, your question is unanswerable and meaningless.
Some operating systems that are available with new laptop computers are some more common systems like the following: Windows Vista, and the Vista Ultimate.
It is not hard to load operating systems software but first you must make sure the old operating system has been removed then use the software discs you have to being loading the new system.
There is no uninstaller for an operating system. To remove an OS, simply format the partition that holds the operating system. If you use a boot manager to choose between different operating systems the software should automatically detect missing operating systems for you.
"Non-proprietary" is the opposite of the above. These are more commonly referred to as "free" operating systems, since you have access to the underlying code, and can modify it. Linux and FreeBSD are excellent examples of non-proprietary operating systems. The choice of non-proprietary operating systems can make it much easier to upgrade hardware as new technology becomes available.
The operating system is top of the line in the cell phones. Operating systems need to reevaluate their standards to compete in the new market of cell phones to keep up with new standards.
Microsoft discourages computer manufacturers from selling equipment with older operating systems installed once a new OS becomes available. It is usually more financially attractive for the manufacturers to offer the new operating system as Microsoft may give them discounts for purchasing it, and perhaps take the discounts away from the older operating systems.
Unix and any Unix based operating systems can be downloaded for free. There are also many operating systems that can run on top of Windows or side by side. Many of these types of operating systems are Lynix based. All of these operating systems are "open source" which means that any one that knows how to, they can modify, rewrite, or add new features to the programs. Being open source software is that makes it free to download.
There is no such thing as a "modern" operating system. All operating systems in existence build upon designs and structures conceived over 25 years ago. The operating systems themselves have only been updated to use newer hardware and perform some new tasks.
Microsoft is a commercial business. They create new operating systems so they can sell them. People purchase the latest operating system. Many of their customers preferred XP to their new systems until this latest system became available. Apparently, this latest endeavor is better than XP which is saying a lot.
Linux has already surpassed all other operating systems for web servers. The growth rate for new servers is slowing, but it is still ahead of Windows servers.