Platforms that may become "toolboxes" do not start out that way. Successful products do one thing and they do it extremely well and then they build off of that. Most of the things you mentioned are not generic "toolboxes" either. Amazon is VERY specific towards buying and selling online, and when they started they were even more specific around buying and selling books online. Same with Ebay and social media.

Ethereum is a generic toolbox but it got it's big leg up by being the best option for one very specific use case which was making tokens for ICOs.

Hive's best chance of succeeding will come from picking one particular thing and making it excel at that thing. This way anyone who wants to do that thing will likely use Hive because it's the best. Even if it can support lots of other things, like Ethereum could, the way it will gain market share and grow is by focusing obsessively on one thing and being the best at it.