You mean the monopoly is due to Office and DirectX?
There are plenty of alternatives still. I only use Outlook due to work but I could also get around that through several ways.
Maybe we just have a different definition of monopoly?
Definition: https://www.merriam-webster.com/dictionary/monopoly
1 :exclusive ownership through legal privilege, command of supply, or concerted action
2 :exclusive possession or control
no country has a monopoly on morality or truth —Helen M. Lynd
3 :a commodity controlled by one party
had a monopoly on flint from their quarries —Barbara A. Leitch
4 :one that has a monopoly
The government passed laws intended to break up monopolies.
There are plenty of alternatives still. I only use Outlook due to work but I could also get around that through several ways.
Maybe we just have a different definition of monopoly?
Definition: https://www.merriam-webster.com/dictionary/monopoly
1 :exclusive ownership through legal privilege, command of supply, or concerted action
2 :exclusive possession or control
3 :a commodity controlled by one party 4 :one that has a monopoly