Proof of Stake & Network Ownership

Trying to understand PoS incentives.

Let’s say the Majority of staking power conspires, because it is not satisfied with the state of things (e.g. too little ROI on staked capital).

The % of staking power required to be Majority differs between algorithms, but always for liveness/finality there is some threshold that says: x% of nodes (Minority) may fail and the network will still make progress.

So let’s say the Majority of staking power "takes the chain private." Meaning, the chain is continued in a private network. Minority staking power is treated as being offline.

"We only publish the chain once TX fees are raised."

Effectively the chain is stalled until users give in to the demand.
There is no direct cost for the Majority. In fact, the value of the stake may rise if TX fees are raised, because now the stake is bringing in a larger ROI. Depending on the algorithm, there is also revenue from slashing the Minority stake.

In this sense it is as if the Majority stake "owns" the network and can make demands of the users.
Depending on how much they depend on the chain, users may be forced to give in to far-reaching demands.
On the flipside, users may fork-off the Majority by switching to a client that just blacklists the Majority’s addrs. However, this would potentially discourage future stakers / make staking even less appealing. The remaining Majority (which was Minority before) may try to pull off the same thing again.

So both users and stakers make themselves vulnerable by committing to a PoS chain?