Here is the link to their "master plan" to read all of the excavated scrolls: https://scrollprize.org/master_plan It looks like there are two main bottlenecks to reading more: the need for manual intervention in segmenting the scanned scrolls, and the cost in scanning new scrolls.
As for segmentation: get some sort of collective solution going, like the Seti@Home did, but for people who are bored as hell, instead of them scrolling Reddit or Twitter all day. Maybe do it like a CAPTCHA so you get it done for free? I'd segment for a few hours a month if I had the ability to do so.
This is a cool project that has taken a community to build to this point, why not try and open and expand the collective of humans working to understand the scrolls? Get millions of people involved and you don't need to rely on technological crutches and development, though that is not the worst way to go either.