There is no valid reason for the vast majority of what is supposedly a currency to be owned by the company that created it. Imagine if PayPal launched but required everyone to transact in fractional shares of PayPal to get anything done. Oh and by the way, those shares are majority owned by the founders, but they’ll sell you some so you can send them to your friends.
This is ridiculous.
So far this scheme has worked out fine for the original creators of Ripple-- who've extracted hundreds of million selling their massive premine to an ignorant public, then abandoned the original and did it again. What we're seeing from signal now is just a third generation of the same scheme, preempting the ripple founders from doing it again (or maybe they're involved behind the scenes, who knows?).
So long as there seems to be no consequence except a massive windfall (SEC fines against ICO/premines have tended to be a fraction of 1% of the funds raised), it's unsurprising to see them continue.
The fact that it may kill one of the more useful secure messaging apps as a side effect? Welp. This is why we can't have nice things: Collectively, we're better at funding borderline scams than public goods.
If one wishes to subject their wealth to the whims of a massively centralized cartel of "rationally self interested" HOLDers, maybe it's better to deal with the devil(s) one knows.
Problem solved.
Surveillance on daily spends is not valuable. What's valuable is things connected to your identity, specifically associations with other individuals and companies.