I think it's a real "chicken and egg" situation no matter what alternate mode you look at.. Cyclists here in Toronto have been asking for safe infrastructure for decades and have been met with "Yes, but nobody does it." Suburban areas often have no sidewalks. The answer is always the same: "Nobody will use them." So unfortunately the answer seems to be that you need vanguards to go out and start doing it anyway. In the case of our cycling infrastructure, slow increases in ridership seem to be just starting to pay off with more infrastructure planned and being installed but it's slow going and the experience of being in that first group of users is not always like the article suggests.
Transit is particularly challenging just based on much of North American design. For transit to be pleasant for many frequency really matters. Nobody wants to be standing on a streetcorner in Tucson waiting for a bus for 30 minutes when it's 105° outside. The same is true for riders in the Toronto suburbs when it is -20°. The fundamental issue there, though, is we've built neighbourhoods that are so sprawling that even having a bus let alone a subway or LRT come every 20 minutes might mean that you have a handful of riders - not enough to pay for the operating costs. To me, densification of suburbs should be a high priority because the alternative as we're seeing here is gridlock.