Fun to see someone who’s been at SourceFabric, I’ve been trying out Booktype and have been curious to use it to publish a longer read some day!
I think for collaboration I can recommend having a look at Adam Kahane’s book “Collaborating with the Enemy” about what collaboration really is and different forms of “collaboration”. Would be interesting to learn about different types of collaboration in peer-to-peer network.
For Open data collection, I really think you are on to something. It’s quite political as many authorities often release datasets which are not so interesting even though global warming and climate change are imminent huge challenges. There’s also often a lack of sensitive datasets around economic spending which could cause a lot of debacle.
I think it’s really true that if you can’t delete your data, it’s not yours. At the same time, there’s a big risk someone has already copied the data so it’s no longer “yours”. For event activities off Facebook I suggest having a look at the current crowdfunding by Framasoft NGO https://framasoft.org/en callled Mobilizon https://joinmobilizon.org/en/ which is very well on its way to create an interesting replacement to FB. Events is the only function left on Facebook that I hear keeps people on it.