The Signal Foundation is a non-profit. The non-profit owns an LLC under the same name which publishes and develops the apps.
The software itself is open source, and licensed under AGPLv3, the same permissive license as lemmy and mastodon.
Calling them a private company with no motivation to disclose any failures in their security is pretty clearly untrue in whole.
In what way would that benefit trump? Also the president can't unilaterally authorize bailout checks through executive order, that would have to go through congress which is unlikely.
elon is valuable at the moment because he's rich, when that's no longer the case, trump will have no use in tolerating him any longer. elon will be discarded. trump isn't exactly loyal to those around him.