a manufactured "hack" could steal all bitcoins from users and guess what - there are no regulations, no authority to complain about
This is correct indeed - as there was said, in the IT world everything could be hacked, everything
. An absolute protection today would mean some weak level in the nearest feature, and regarding the Bitcoin algorithms, I suppose, there is nothing perfect and it could be exploited somehow; that's why there are appearing "new" crypto currencies, which suppose more stronger algorithm of encoding the bits, but still, they are perfect nowadays and noone could guarantee they will be ideal for the next 10 years.
I suppose, this all is like a short-term game, for those who jumped into the last wagon of this train, the game could be profitable if they could exit in-time; for others, it's yet another finance game similar to Forex etc. where you could earn something, but lose a lot.