[dcw303]

If the CRM has your purchase history, does this solve the problem of targeting products on users who have already purchased it?

Because I am really sick of Google serving me ads for stuff I recently searched for and subsequently bought.

[chrisguitarguy]

That's advertisers themselves doing a bad job of retargeting. First-party data is probably not going to change that. In fact, it may mean you'll just get those ads across all your devices.