I would like to isolate every website I visit into a container, such that cookies or other tracking mechanisms are unable to be effective while on other pages.
To an extent, Tor can address this, though many sites make this exceedingly painful (Captchas, rate-limiting, outright blocking), and Tor itself is slow -- to set up, bandwidth, and latency.
I'm not sure if some middle tier of connection indirection, content caching-and-forwarding, or other mechanisms, might better address this.
There are protocols such as IPFS and browsers such as Min which might be a partial response to this: