Why no quality reissues of 45s?

Since the most concentrated and focused way to listen to individual songs is on a single and that songs on 45 often used to sound better than the album version,why is no one reissuing classic or rare singles?

It seems the preferred speed for sound quality is 45 rpm even on albums.

All I see are David Bowie and Iron Maiden picture discs.

Which singles would people like reissued?

I’d go for a Black Sabbath Paranoid.As I recall it sounded dynamite and I could watch that Vortex label goin’ round.

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