Earlier quoted context omitted.
He did not make that up. https://www.cnbc.com/2019/02/15/alphabets-sidewalk-labs-want...
This is arguing in bad faith. The article talks about > proposed taking a portion of Toronto property taxes, development fees and increased land value to build a smart city on the eastern waterfront [...] which would amount to an estimated $6 billion over 30 years 6 billion dollars isn't astronomical for a major urban development project. And Google being paid based on increases in property taxes gives them an incent…
... isn't what the article or Alphabet were talking about. They were discussing being paid property taxes, period, not simply taking the property tax delta caused by their real estate development.
And anyway, if I buy a house and pay property taxes, then improve the property so that my property taxes increase, I don't get to keep that increase. Why should Alphabet? But _even this_ is less radical than what Alphabet was proposing, as I've explained above. Alphabet was directly seeking a subsidy from the city, to be taken as a percentage of property taxes.
You may not think of this as unacceptable, in which case I wish you luck attracting such an offer to your own city. But over here, we don't want it.