Different sport with different cap and dynamic, but Ainge helped build the foundation of that team (Brown and Tatum) with the picks and assets he got for trading Garnett and Pierce to Brooklyn. At that time, Garnett and Pierce were former champions who could have gotten the Celtics to the playoffs comfortably for several more years, but Ainge realized they were not going to win anything and it was going to be diminishing returns going forward, so he turned these aging assets into younger, better players. This is what we should do with Konecny.
The Sixers haven't lost because of the Process; they lost because they squandered the treasure trove of assets they had over the years on terrible picks (Simmons, Fultz), trades (Bridges), and FA signings (Harris over Butler). And plenty of terrible coaching and flawed stars.