IMHO, for effective computing in the Internet era, we should not be depending on classical OS or application centric but data-centric. Otherwise it will be always a mismatched of abstraction between OS and application. In this case a web OS inside a classical OS, remember webOS anyone [1]?
This should a new data-centric OS similar to TabulaROSA in concept where data is managed and governed by mathematical relationship in this case associative array based D4M [2],[3].
This concept can be implemented initially on Linux, since now Linux support generic non-conventional kernel bypass for memory, storage and compute with io_uring and eBPF, for examples [4].
[1] webOS:
https://en.wikipedia.org/wiki/WebOS
[2] TabulaROSA: Tabular Operating System Architecture for Massively Parallel Heterogeneous Compute Engines:
https://dspace.mit.edu/entities/publication/69c8906b-440f-49...
[3] D4M:
[4] BPF comes to io_uring at last: