Align Technology's acquisition of Cubicure has raised concerns among 3D Systems' shareholders. However, 3D Systems has reassured its investors that this acquisition will not significantly impact its business operations, suggesting that Align Technology's move is not seen as a major threat.

3D Systems has addressed the concerns of its shareholders, stating that the acquisition of Cubicure by Align Technology will not have a significant impact on its business operations. This suggests that the company does not see the acquisition as a major threat to its market position.