I've found the idea of unikernels interesting for several years now, is there a tl;dr on why they don't seem to have taken off, like at all? Or is it all happening behind some doors I don't have access to?
[0]: https://www.tritondatacenter.com/blog/unikernels-are-unfit-f...
you can use PVM patch and para-virtualization. I've seen several startup using that approach to be able to create VM on small/cheap EC2 instances.
Managed runtimes on top of hypervisors.