I think you need to do some more research here. Saying Frankfurt has less than a million people would have been like saying that Toronto had only 2 million in 1996. Metro population figures are the most important here. Frankfurt metro has 5.6 million. Munich has 5.2 million . This is right around Toronto's metro pop of 5.1 million.
Look at other things on wikipedia. Do not look at the metropolitan area. There is the city area. Then there is the Urban area. And then metropolitan area.
Toronto - city - 2,503,281 , Urban - 4,753,120 , Metro - 5,113,149
Frankfrut - city - 667,330 , Urban - 2,295,000 , Metro - 5,600,000
Munich - city - 1,326,807 , Urban - 2,606,021 , Metro - 5,203,738
So, it is much better and appropriate to look at Urban Area. The metro area down there would cobble up a bunch of smaller cities. In Toronto what would the metro area gobble up - oshawa? So lets not look at the metro area.
The best example is Chicago. The city is almost 3. The urban area is like 8.7. And the metro area is almost 10. The metro area includes far out places like northern wisconsin and northwest indiana. We should not include these far away places. In Europe it's different, because there is less open space.
Now that we have indeed confirmed that we are dealing with apples and oranges..... well there is not more to be said. The whole argument that you are pushing is pathetic when we take this into consideration. Lets not even mention how much better served by metro their city alone is.
That said, I don't think there is any need or desire to turn Sheppard East or Eglinton West into a new Yonge and Dundas. My ideal, and I think most people's dream, is for those areas to become more like Queen West, Roncesvalles, Little Italy, or the Beaches. All areas that are built around streetcars.
And my idea is to offer alternatives to the car, so that people can go from one part of town to another without too much trouble.
As to Jane Jacobs on subways, it turns out she didn't much like them. Here is a passage from an article in the Toronto Star from 1971, when the northern extension of the Spadina line was being debated:
"On the witness stand she startled the Spadina hearing by totally damning the Spadina rapid transit line. She is a gray-haired lady with grown children and a very pleasant smile and she comes on with a soft clear voice that has just a trace of acid in it. She said that she couldn't imagine a better way to bankrupt a public transportation system than to build the Spadina subway."
I would agree with her. In the general framework under which we are limited, cities should pay for everything themselves. Meanwhile in superior places subway construction does not bankrupt the city or the transit company because the funding comes from the national government.
At any rate, the spadina and younge lines were not really designed to serve as alternatives to the car. They were designed to compliment the car. We notice that they used the same sad mistakes that were done in san fran's bart - far away stations that are used for commuting more then short personal trips. We need to use the metro for more than just getting to work or going to school. This is one thing that people including our subway promoters here do not get.
Another useful strategy that is a little more upstream than just building rail lines around an auto-dependent city is to come up with creative ways of encouraging access to those services in car-dependent areas.
Holy smokes batman, are you even aware of what you are saying? That would trigger so much backlash. You are calling for what only a radical would be calling for - car disincentives. And car disincentives is something that is so badly opposed by the auto lobby in the US and Canada. Subways can easily be funded from gas tax alone. But we are strongly discouraged from even thinking about that.
Don't trample on big money. Big money does not like that. Big money likes to build lies to the downtown to reduce the insane congestion. Big money likes to strengthen the downtown because that is where the big moolah is. Big money does not like to discourage use of the car, because that is where they put their money.