Every single social media platform of note charges accounts for “reach”. Your post gets seen by 1-15% of your followers unless you “promote” it with a marketing spend.
Bluesky has no mechanism for artificially limiting the reach of legitimate messaging, and no business impulse to build one. It really is something new under the sun.
You are misunderstanding what I am saying: all major accounts, monetized accounts, or business oriented accounts have their reach artificially limited. All. All platforms. Twitter was an exemplar of this well before it was converted into a campaign operation.
I don't believe Twitter does this even now. Their for you algorithm is actually open source (supposedly) so you could check.
But algorithmic reach existing in the first place was only a Facebook thing for a long time; other people started doing it because of TikTok. eg there's no way to limit an account's reach on Tumblr, it's just nobody would ever reblog a corporate Tumblr post.
Bluesky has no mechanism for artificially limiting the reach of legitimate messaging, and no business impulse to build one. It really is something new under the sun.