The problem with companies like Alphabet / Google / Sidewalk Labs building mini-cities is twofold.
First, they lack the internal focus so they flake or sacrifice on things that no sane singular focussed entity would. For example Craig Nevill-Manning, head of Sidewalk Labs flaked on his talk at The Walrus' 15th year anniversary party titled The Walrus Talks The Future. This was a paid event, full of Canadian cultural elites, specifically aimed at talking about the future. "When someone shows you who they are believe them." If they cared about what we thought they would actually engage the people here that care.
Second, they try to leverage existing internal competencies. Completely understandable, but it warps the outcome to solution mixes that aren't necessarily optimal for the people actually living in the city. When all you have is a hammer, everything looks like a nail. I don't want to live in a city where a techno-hammer international corporation has hammered its copentenczies here and there. I want to live in a human city where little decisions are made by little people. I want to live in a city where flowers hang from windows and where theres little bike paths and a nice mix of trees. Cobblestone streets. Community gardens and little shops and restaurants. Some Chinese, some French, some Italian.
I'm not saying Google is necessary going to fuck up that area of Toronto. It might be great. But it's such a large project that I worry that it risks being another CityPlace. A soulless pocket mark on a diverse and increasingly interesting city.