DCA will not end when Bitcoin reaches a certain price, otherwise it would have ended when Bitcoin was $10,000. It will continue to exist even if Bitcoin was $10 million, provided that there is price volatility and the general trend is increasing. In short, this strategy does not depend on a specific price, but on volatility. Bitcoin's volatility is actually decreasing, but it has not reached a stable level. If Bitcoin's price stabilizes at $1,000/$10,000/$100,000 for several years, then DCA will fail.