Don't get it

I don't understand why it is that buildings before 1979 aren't required to have wheelchair accessibility. Vancouver is over 100 years old so does that mean that 90% of Vancouver's public buildings don't technically have to abide by the accessibility mandate? I am not sure about you as readers but I don't agree with it. It sucks in a way because I am probably going to be fighting my whole life for people in my position for public buildings whether or not they are publicly owned or privately owned to be accessible. I wonder. Will this be the case? Or will something happen where the city and districts will be required to do anything? Now, I understand that they are slowly moving forward on these types of issues and I am on a board to help with them which is a good step. I have a bit of an issue with public transit and I am not talking about the buses because in my opinion I think they are great. I'm talking about where I can get on and off them. I would say about 35-40% of bus stops don't have that wheelchair sign on them in North Vancouver and some I don't understand why they don't have it because there is so much room that 5 people in chairs can park behind each other. Now that, I don't understand.