Modulation / key changes have been used in music for ages but the style I’m talking about is the distinctive last verse (or chorus) sudden key change up to power through to the end. Seems to have come about sometime in the 60s/70s and was everywhere in the 80s onwards.
Examples:
Heaven is a place on earth - Belinda Carlisle
I will always love you - Whitney Houston
But who popularised it? What was the first big song to do it and set the style for the genre?
The short answer, I don’t know.
But from my own observation there were a lot more general key changes in 1980s-era rock, which may have been the result of fewer other ways to escalate a song for the final chorus and outro, which is to say, yes, new tech (mostly sampling, looping and higher-fidelity recording) reduced the need for creativity much the way that movies had a lot more stage effects before they just filmed actors in green-screen and added everything with CGI.
Last year I went to a SGMC concert of mostly Queen, and was noticing how much their tunes bounced around, often having two or three key-changes per verse+chorus.