Comment by PaulHoule

See

https://en.wikipedia.org/wiki/Capitalism#Definition

to note that "Capitalism" is really a technical term from Marxist theory. Advocates of capitalism will never find a definition they accept because they want to have one that encompasses all the good (of which there is plenty) and rejects the bad (of which there is also plenty)

Positing such as thing as "Capitalism" is positing that there could be some other system or that the current system could have an end. Advocates of the status quo really believe

https://en.wikipedia.org/wiki/There_is_no_alternative

want to treat prosystemic economics as a science like physics or chemistry, etc.

If there is a way our system can claim to be better than others it is because we have competition in markets, politically, etc.