In the spirit of "it's history, but it's all over now anyways".... the reality is, the Bruce lines were pulled up in the 90's before the shortline movement had really gotten going. The only lines operating at that time were the GEXR (on the Goderich portion that they have since pulled back to) and the CB+NS in NS. Both were viewed as interesting experiments but there wasn't much momentum behind them. At the time these were groundbreaking.
There was at least one booster who attempted to save the Bruce lines as a sshortline startup. There were customers, primarily agricultural, who indicated they would use the service. But there was little precedent for securing funding, especially since the long-term costs (eg bridge maintenance) were not well understood and appeared to need a lot of money.... too risky for institutional lenders. The smaller startup shortline operators were still finding their feet and local boosters didn't have the sophistication or business savvy toovercome the bureaucratic inertia.
In fact, some of the process and policies that the Ontario government (and other provinces, and Ottawa) developed to create a provincial level rail policy happened in the course of the Bruce proposals, paving the way for later shortlines..... but too late to save the Bruce lines. The Orangeville spur was the only part that survived, with CP running it until 2000 and then passing it over to Orangeville and Cando, who were just emerging as a shortline operator at the time.
Timing is everything - another ten years, and one of those lines might have survived. But it's all coulda, shoulda, woulda now.
- Paul