I beg to disagree as progressivism is coming from the word "progress". A progress induce a change.
I believe you are judging these ideologies from your own point of view. Explaining why you can compare countries between those that can or cannot be conservative.
Meanwhile definitions are supposed to be absolute.
Also, you are probably referring to the figurative definition of conservatism, progressivism (where conservatism is right winged and progressivism left winged for exemple).
While I'm talking about the literal definition : conservatism wants to make things stay the same, progressivism wants a change.
I don't like today's definition drift, as they are made mostly for political communication : according to them progress is always good, conservatism always bad. I believe we can both find arguments of this being not true.
So I rather speak about the real definitions, the literal ones, of these words and use them as it.
conservatism from latin "conservatio" meaning "keep"
progressivism from latin "progredior" meaning "moving forward"
To keep you life can be good, to move forward a danger can be bad.