Ron Shamgar of TAMIM Asset Management explains why the unity of WiseTech Global Ltd (ASX: WTC), Afterpay Ltd (ASX: APT), Altium Ltd (ASX: ALU), Appen Ltd (ASX: APX), and Xero Ltd (ASX: XRO), formerly called "the WAAAX group" ended; and the takeover of TASK Group Holdings Limited (ASX: TSK) started.