Oh so we have you to blame?
Sure, if you want to blame the architects and designers who are the ones fighting for good design and trying to push their clients to do the best case scenario. (The developer is also the reason we have a job and repeat business, so the architect has to be very careful and our hands are tied.) The developer makes the final decision on what the designer comes up with - not the designer.
Blame regulations that don't work (i.e. the 60/40 glazing ratio, which doesn't get to the crux of the problem), and a planning system that lacks resources to plan comprehensively and instead implements blanket/cover-all regulations such as 25m separations and particular floorplate sizes that make every new development the same type of point tower on a podium. Big building code changes are coming and a lot of architects - while it will mean a big adjustment in workflow - are very thankful for this. Those of us who design want better codes that will force our clients to do something different than the current norm.
Not all architects are great, but I can assure you that there are many many architects and designers who want to push the envelope and do things differently, create beautiful spaces, create great housing, etc. etc.... but at the end of the day, if a regulation doesn't call for something to be done the right way, a developer won't do it. And why would they?
I am wondering how this process will look like with all the glass towers in Toronto? May be 30 years from now? Is it even feasible to replace a window wall?
The good news is that removing window wall or curtainwall is straightforward as far as demolition goes. So while it is entirely feasible, yes, it is very expensive to replace with a better system. My concern for the future of these condo towers would be that many condo corporations will lack the funds to replace the system with something better, or, if they do, that it will lack architectural quality or ambition. They likely will just hire a contractor or building science consultant and won't spend money on an architectural consultant for the project. I'm worried that we'll end up with some pretty brutal re-cladding projects, many of which could be really ugly or look out of sync with the tower's design, even if the building performance is improved.