The decentralized aspect of blockchains would certainly help for with the acquisition problem, but they're not really great for storing large amounts of data (there's some that are challenging that assumption, but I don't think they're far enough along in their lifecycle to be proven for this task).

I wrote a post a while ago about storing genomes on blockchains which gets into the data storage issues.

Although the file size isn't particularly large with most commits, large volumes of small changes present their own problem. Having said that, as you've pointed out a few times recently, the major steem developers are focused on performance, so we're probably better positioned than others to try that out.

However, if I had to bet right now, I think it'd be more likely to see a distributed database acting as a backend with a blockchain keeping track of transactions and such.