SSRN posts anything (no peer review). It has the same function as arXiv.
The only issue I see with moving to arXiv right now is that currently arXiv only accepts papers on topics such as physics, math, and CS. For arXiv to be helpful to the SSRN crowd, it would need to have a few new categories (e.g., "quantitative social science", which could be split into subtopics mirroring the main topics in economics and management science journals).
The only issue I see with moving to arXiv right now is that currently arXiv only accepts papers on topics such as physics, math, and CS. For arXiv to be helpful to the SSRN crowd, it would need to have a few new categories (e.g., "quantitative social science", which could be split into subtopics mirroring the main topics in economics and management science journals).