If not, then the 1st step to jailing people is to change the law.
The EU did find that IAB (behind one of the "industry standard banners") was liable for fines: https://www.euractiv.com/news/top-eu-court-finds-widely-empl... But unfortunately that was partly dismissed on procedural grounds and went nowhere: https://techgdpr.com/blog/data-protection-digest-19052025-di...
If not, then the 1st step to jailing people is to change the law.