Will Twitter ever handle this? Given how easily this journalist found this pattern I'm pretty sure it would be trivial to start banning these accounts with their internal metrics.
"In an email, Mr. Leal said that buying followers for his business generated more than enough new revenue to pay for the expense. He was not worried about being penalized by Twitter, Mr. Leal said. “Countless public figures, companies, music acts, etc. purchase followers,” he wrote. “If Twitter was to purge everyone who did so there would be hardly any of them on it.”
Ban a few, even just for a few weeks, and the others will stop. That's how society works most of the time.
If you allow fake accounts to flourish, you tarnish your brand and hurt your platform in the long term.
Of course, theory is one thing but the people in charge of making decisions might have no motivation to prioritize the long term viability of the company if they themselves don't really care about the company and the shareholders but just want to extract maximum amounts of value for themselves...