You are misstating the history. There was a subway, until Harris cancelled it. And one for Sheppard, until Lastman cancelled most of it (he only cared about the North York segment, and nobody cared about Scarborough....which gave rise to Ford's eventual platform). The cancellations were publicly known, but there was no blowback and little advocacy to challenge those decisions.
The political mood of the day was very much about not spending money on subways because they were considered too expensive. Love him or hate him, Ford fought for an underground line on Eglinton. But in general, LRT was all the voters would accept.
- Paul