.... AnonyMint pumping his vaporware as usual ...
"Proof-of-Stake Politics (non-decentralized governance)" - I guess you haven't been following Bitcoin lately? There are just as much politics involved with PoW as soon as a cryptocurrency is large enough. Google "Bitcoin block size limit controversy".
Bitshares R&D is average yet Monero (LOL) is above average and your vaporware is above average. Monero releases one whitepaper and all the sudden they are above average R&D... give me a break lol. You obviously have no idea how much R&D in many different decentralized technologies Bitshares
1. Monero has released many more than one "white paper". There is one formal research paper (ringCT) but at least 4 other MRL reports and some other documents.
2. Bitshares is off topic on this thread. PoS isn't entirely off topic since Dash's masternodes are a form of PoS (even more so in evolution since masternodes/stake will verify transactions).
Your claim that attacking a PoS coin is a "fixed cost" and attacking a PoW coin is an "unbounded cost" is similarly ridiculous considering the costs of attacking both types are dynamic (PoS depending on the price of the coin and PoW depending on the hash power of the coin.)
It is absolutely correct. Once you control a PoS coin, you control it forever at no additional (significant) cost. How can anyone else ever take control away from you since you control staking and the only way anyone else can get stake is by buying it from you? No one can and you don't need to continue expending resources (mining) to retain control as you do with PoW.