Karma is a b*tch

How smart or cunning Maisie and Shane could be, Dax knew to simply overturn their decision into his way.

Why would he let Aarvi wait for many years before exacting her torture to the couple?

Doesn't that make her still hang in the past?

Dax was already against Aarvi visiting her parents. Even if she might pretend to be ignoring their words, he was sure as their biological daughter, she would be hurt hearing Maisie. Shane might bow down to the money thinking of frauding her for money and shares of Skylar, Maisie wasn't the same. For her, Aarvi's achievements and hard work were nothing. Her pride and ego stood above everything. She might slander Aarvi instead of surrendering or accepting her mistakes. 

So Dax wasn't going to make Aarvi wait following Maisie or Shane's plan. And he had better business than just acquiring Maisie's studio and their shares.