[n_ary]

In other words, google knows so much about the visitor to be screwed by regulation, hence they want to wrap the coarse-grained moat as helpful topics for advertisers. Meanwhile not exactly share that info with anyone to not lose their moat benefit either by removing third-party cookies effectively killing other data harvesters’ moats and become the one true eye of sauron(or politely called as monopoly).

[londons_explore]

But the topics API is available to anyone to use right? So in a way they're getting rid of their moat because they're closing down a datasource where they are market leading and opening up a new data source where everyone gets access for free.

Seems like a bad business move to me.