This is above my pay grade but are we getting close to encapsulating an old Win app (ex: quickbooks & related files) and making it portable via browsers?

A Windows Kernel in a Browser Tab, Part I: Cold Boot, Fast Boot, and Four Megabytes | Matt Suiche
https://www.msuiche.com/posts/nanokrnl-cold-boot-fast-boot/

I don't understand how you run your own binaries. Kinda crazy though that you can easily allocate more resources to a browser tab today than what would have been an entire machine when Win95 launched.