I don't disagree with enforcement of the fare, I just think we should temper our expectations.But does that mean we should just stop trying? The TTC has entirely stopped fare enforcement, presumably in agreement with your thinking above, it’s impossible, so don’t bother. I feel like such a dupe now having paid my fare every time.
We have three options.
1) Make everyone pay the fare
2) Make only some people pay the fare
2) Make no one pay the fare
We aspire to the first, while hoping for a high proportion on the second and ultimately accept the third.
As nfitz notes, too, it's not the TTC that gets the revenue from the fines, anyway. It's collected by the city. It's hard to imagine there's a lot of appetite within the organization, and for good reason, to collect fines from someone that they don't see a penny of.