This is not to say that there won't be problems implementing electronic filing. But it is important to have perspective. The potential for added functionality and ease of access is huge. But that, by itself, would never bring electronic filing. The saving in storage and personnel expense from the fully electronic docket is enormous.
Money drives the implementation of electronic filing.
Money, not surprisingly, also gives rise to fighting issues. Give that to the commercial entity maintaining the system. I haven't done the math. These costs, like other accumulating court costs, would be collected after the case is over from whomever costs are assessed. The accumulating costs for filings would be paid to the provider when ultimately collected.