HIVE increases in value if:

• the person is active (keeps blockchain alive)
  • publishes content (earns money for content and helps curators by giving something good to vote for)
  • interacts with other users (others see that they are not alone here)
  • curates other posts (encorages others)
  • promotes herself and content (ecosystem growth)
• buys tokens (creates scarcity and HIVE price goes up)
• builds apps (ecosystem growth)
• trades coins on exchange (ecosystem growth)
• sells products for HIVE (ecosystem growth)

And that has nothing to do with blockchain as it. The same can be done with other blockchain or "system".