The answers to online platforms trafficking in personal data and metadata is two parallel and concurrent efforts:
1. Much tougher data privacy regulations (needed per country)
2. A central trusted, international nonprofit clearinghouse and privacy grants/permissions repository that centralizes basic personal details and provides a central way to update name, address(es), email, etc. that are then used on-demand only by companies (no storage)
By doing these, it simplifies things greatly for people and allows someone to audit and see what every company knows about them, can know about, and can remove allowances for companies they don't agree to. One of the worst cases is the US where personal information is not owned by the individual and there is almost zero control unless it's health related, and can be traded for profit.
1. Much tougher data privacy regulations (needed per country)
2. A central trusted, international nonprofit clearinghouse and privacy grants/permissions repository that centralizes basic personal details and provides a central way to update name, address(es), email, etc. that are then used on-demand only by companies (no storage)
By doing these, it simplifies things greatly for people and allows someone to audit and see what every company knows about them, can know about, and can remove allowances for companies they don't agree to. One of the worst cases is the US where personal information is not owned by the individual and there is almost zero control unless it's health related, and can be traded for profit.