What do you lose if you die?

I haven't fully bought the concept of SOT yet but I enjoy the gameplay a lot. Can anyone tell me if we still know the consequences of dying?
My theory is that this game in an end-game scenario, regardless of how much PVE content we will see, will end up in people chasing PVP until the either a huge non-pvp patch will be released or everyone has left the game.
Which brings back to my question, what do you lose when you die? Just want to know how long the game will be active before everyone leave :) (Yes I'm a very positive but realistic man

Thank You

I didn't find the right solution from the Internet.
References https://www.seaofthieves.com/forum/topic/15917/what-do-you-lose-if-you-d...

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