Trademark is established by use. Registration can offer an extra level of protection, but is not necessary to own a trademark. Elon has been using his X.com since he bought it back from PayPal in 2017, which interestingly is around the time some of these other 'X' registrations took place.
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eccodown
Transmitting an 'x' online, seems like he's in the data transmission business. It has also been used as a redirect to The Boring Company website to sell hats.
X owns the trademark for "X" simply by using it, whether it was registered with a trademark office or not. It certainly doesn't hurt that Elon's company registered X.com in 1993, then he purchased it from Paypal in 2017 and has been using it in various capacities since then.
The supply is currently being bootstrapped, the rate of new creation is falling as the supply get closer to the maximum. Some months from now new coins from block rewards should halve (3.7% inflation dropping to 1.85%), and the process repeats as maximum supply is reached in the distant future, at which point the mining reward would primarily be the transaction fees.
“[The court] found that consumers were not harmed by Facebook, which had informed them about data use practices in a lengthy terms of service agreement when they registered as users. “There is no evidence that Facebook obtains the consent of users through coercion, pressure, exploitation of lack of willpower or otherwise unfair means.” “
The court seems to have ignored the cases in which consent is never obtained. Shadow profiling is still happening isn’t it?