I highly suggest you guys checkout Decentr. They are building blockchain platform that allows individuals to have ownership over their personal data to exchange and leverage for economic benefits in a decentralized and secure way. I think it's false to say we can't collect data in a secure way therefore stop the data economy. We should be seeking to empower individuals with the ownership of their own data to create a true data economy.
All of your data is stored in an encrypted wallet/ID via decentralized storage solutions. Only you have access to your data and control over your data via a private key like a crypto wallet.
Nitpick: It would be more correct to say that FB collects GST for the Australian Tax Office. In an accounting sense only consumers actually pay GST.
Also worth pointing out that FB’s tax bill in Australia is pretty minimal (rightly or wrongly). The tax on these payments could easily end up being worth more than Facebook’s tax bill in Australia.
Actually if you think of these measures as a creative way around US strong arming on a digital services tax they make a lot more sense despite the legislation itself being a weird mess.