Full Answer

Data ownership in BigQuery follows the same principle as cloud storage: the provider maintains the infrastructure, and you own the contents. Google's Cloud Terms of Service explicitly state that customer data remains the customer's intellectual property. Google cannot access, sell, or use your BigQuery data for advertising or product improvement unless you explicitly opt in to specific programmes.

This distinction matters because not all analytics platforms work this way. GA4 processes your raw signals through Google's modelling layer — applying data thresholds, blending sessions with modelled conversions, and sometimes withholding data that falls below privacy thresholds. The data inside GA4 is a processed derivative, and you access it through Google's interface on Google's terms. BigQuery gives you the raw events, unfiltered and unmodified.

Practically, ownership means several things for a WooCommerce store. You can export your entire dataset at any time using standard tools — no vendor lock-in. You set retention policies, choosing whether data lives for ninety days or ten years. You control who queries it through IAM permissions, down to individual table access. And if you ever leave Google Cloud, your data exports cleanly to any other system that reads standard formats. Platform changes, pricing shifts, and Terms of Service updates cannot restrict access to data you already own. That is the difference between renting infrastructure and renting insight.