Border adjustment taxes generally consist of an X% tax on imports coupled with an X% subsidy on exports, so that would already increase exports.
Making the import tax and export subsidy the same is also more economically efficient, because it doesn't impose a net tax on cross border supply chains (imagine manufacturing a car in the US, attaching the wheels in Canada, and then selling it in the US)
I like what you're doing, but I feel like the heresies you propose are too tame.
Here are some more radical heresies to consider:
I generally watch videos I enjoy while doing physical therapy exercises. I didn't conceptualize it as hiding the "reward" from myself as an incentive for exercising; I conceptualize it as making the rather boring, sometimes aversive activity less salient by focusing my attention on something else.
As an example, I find it much easier to hold a plank when I'm focused on the video I'm watching than when I'm just starting at the timer counting down.
I think the current diversity of music is largely caused by artists' different lived experiences. You feel something, this is important for you, you try to express that via music. As long as AIs don't have anything like "unique experiences" on the scale of humans, I'm not sure if they'll be able to create music that is that diverse (and thus interesting).
If the AI customized it for each listener (and does a good job), then music will reflect the unique experiences of the listeners, which would result in a more diverse range of music than music that only reflects the unique experiences of musicians.
Of course, we could end up in an awkward middle ground where AI only generates variations on a successful pop music formula, and it all becomes a bland mush. But I think in that case, people would just go back to human-generated music on Spotify and YouTube.
Does this still work? I've often heard it referred to as the "shit sandwich method" (by STEMish non-rationalists), so I wonder if people are sufficiently inoculated to it for it to no longer work