Hive is not privately owned, but rather socially owned. Even joining requires someone who already has stake in the network to burn part of their stake to create your account, that burnt amount permanently becomes part of your account. While ownership is not evenly distributed, that need not be the case for something to be socialist.
You would be able to see this amount for any account on hiveblocks.com, but it's having post-HF24 issues and is down.
Any form of capitalism is in opposition to democracy. People spend between a third and half of their waking lives working, and to say that the form of governance within the workplace doesn't matter is delusional. Not to mention that the logical conclusion of capitalism is one entity having complete control over everything, as it would be in the best interest of any corporation to either buy out the state or create its own state to increase its power.
Workers fought hard and died for many of the liberties people take for granted these days, weekends, a 40 hour work week, a minimum wage. These were all movements against capital, in opposition of capitalism.
The Scandinavian system is not socialism, what they have in place is a welfare state. Workers do not have democratic control of the means of production, therefore it cannot be categorised as any form of socialism. They have social programmes, not socialism.
Under communism, there is no money, class, or state. There has never been a communist society*. While there have been people who called themselves communist, and even places run by people with communist ideals, again, there has been no communist society.
Fascism can exist regardless of the form of economy, it's characterised by ultranationalism and strict adherence to hierarchy. Fascism is an inherently self destructive ideology.
Capitalism cannot exist within a socialist regime. What you're thinking of is an authoritarian regime, which has nothing to do with the economy.
Any system that favours democratisation will inherently create socialism, as any form of democratically, bottom up, run businesses is socialism.
A planned economy is not necessarily socialist, as market socialism is socialism but has a market based economy.
Market socialism could drop in and replace our existing economic system, the day to day lives of people would not change that much. Most people would see significant increases in pay, and would now have occasional work meetings to vote on business decisions or vote on new management, other than that however there would be very little change. Over time, workplaces would improve as workers will make decisions that make working safer and easier, and productivity would go up.
*Just to cover this point, it may be possible to argue that some prehistoric human civilisations were communist, however that's impossible to prove or disprove. I'm specifically referring to modern human civilisations.