Limit copyright for creative works to the author's lifetime. Dad wrote the next Lord of the Rings on his deathbed? Too bad, you better hope he sorted out a good publishing deal that'll survive him. Abolish copyright for software. Sorry, your ecommerce website isn't Hamlet.
Cap patents to a fixed number of years, say 10, and ban software patents. Also require that a patent filing actually provides enough information to be able to reproduce the work given all other publicly available information. Want to patent your AI that requires a secret training data set? Tough. Want to patent your crazy new dating algorithm? Better provide an example implementation in the public domain.
Presumably this wouldn't help if the copyright didn't survive him, as anybody else would also be able to publish the work.
Yes, this would abandon patents and strengthen trade secrets, but with no IP laws trade secrets would eventually either be leaked (because you can't keep secrets indefinitely) or reverse engineered.
Workers already have to sign contracts granting their employers all the rights to their output. Without IP laws they could just walk off and build on their developments if they wanted to.
The renewed interest in trade secrets would also drive some innovation in how businesses can cooperate without spilling their beans because simply licensing their IP would no longer be an option. Without trademark protections a lot of the more blatant trademark infringements would probably just be treated as fraud (e.g. impersonating a well-known brand).
IP laws reward ownership, not innovation. Inventors seldom get to keep their inventions unless they're wealthy enough (read: own enough capital) to begin with. The prolific fan fic communities and countless amateur musicians (both garage bands and online "creators") demonstrate that creative expression does not depend on compensation as they're already barely making any money off their labors of love.
You'd of course probably want some public grants but most foundational research is already publicly funded because private companies are too risk averse to fully fund research with no immediate path to monetization. I think systems like Patreon could also become more important, maybe even to the point that they could be supported as public infrastructure the same way banks are (in some countries anyway). You could still justify protecting your likeness via privacy laws, but there will always be fans who want to know the band merchandise they buy actually is licensed by the band they love, not just churned out by some third party (on the other hand, consider etsy and its creators' rampant "derivative works" of major well-known franchises).