You asked a question. I answered.
You shouldn't discount a place just because you don't like the place nor the answer. And your comment is filled with prejudice. it's unsightly... Simply put, Canada's governments are much richer than the Saudi government in revenue and GDP, etc.
Also your "Saudi Arabia = Etobicoke" doesnt even make sense. One is a country and the other is part of a municipality. If anything, Riyadh (the city) and Etobicoke share many aspects like being made up of a giant grid of wide streets filled with auto-centric mid- and low-rise neighbourhoods of smaller, disconnected cul de sacs.
There are other projects like this one in Asia. But I'm less familiar with them. Also, Perkins and Will are a Toronto firm that designed many stations in Canada and might design the ones for Toronto's upcoming projects. I would say that is very relevant. The REM's stations in Montreal are basically an angular (and further value engineered) version of the Riyadh Metro stations...
The Riyadh metro is also built more affordably than the Spadina extension, SSE, and ECLRT. The Riyadh Metro simply was built to the bidders' design. The biggest problem Toronto has is the neverending bickering and restarts. So don't give me this attitude about 'rich nations'.