Proof of Stake is hardly uncharted waters, their is a large # of Proof of stake coins with different specs, that have been running for years.
(And all of them have a higher transaction capacity than BTC.)
And none of them have anywhere near the market cap, even though they have a higher transaction capacity, and they are not secure enough to have such a high cap. And there is emerging literature showing intrinsic problems with having proof of stake be long term successful and different proposals for solving it. It's not widely accepted that such a system can be valuable and secure long term.
You are showing that you are lacking in the ability to
Compartmentalize .
Technical Capabilities of a coin and its price per coin are not a direct correlation.
Otherwise BTC would be near the bottom of the Coinmarketcap, not at the top.
The Majority of people follow the hype, BTC is the oldest and received the most hype being the 1st, it literally has nothing else going for it.
Which is why it dominance in the coin marketcap , is now below 70%, when it used to be above 90%,
BTC is literally not living up to the hype, because of it technical flaws, that are going unfixed at the present time.

FYI:
One Country Controls BTC Security , it is hardly secure, it is only protected by China.
FYI2: Quick Technical Comparison
LTC can support a 2½ minute block speed allowing it 4X the current Transaction Capacity of BTC
BTC only supports a 10 minute block speed , and according to G.Maxwell
(has been know to lie) , BTC is unable to go to a 2½ minute block speed.
From that 1 comparison, we can conclude that Technically LTC is a Superior Coin to the Inferior coin BTC.
However, what happens is someone sees BTC over ~$500 and a LTC ~$4 , and automatically assumes BTC is better because it costs more.
All that proves is BTC costs more than LTC, not that it has any technical superiority,
which it does not.