Even if Google did zero tracking of users, they'd still be able to display adverts relevant to the search term used when displaying search results. Tracking you

Even if Google did zero tracking of users, they'd still be able to display adverts relevant to the search term used when displaying search results. Tracking you across sites just increases their profit, it's not necessary for their business to exist and be profitable. And even if you argue that it is necessary for them to remain profitable, then they don't deserve to remain profitable. Not at this expense.