I'm not sure whether by "bundling" you are referring to Microsoft bundling IE with Windows, but if so, that was actually one of the findings that was specifically vacated by the appeals court:
These arguments all point to one conclusion: we cannot comfortably say that bundling in platform software markets has so little "redeeming virtue," N. Pac. Ry., 356 U.S. at 5, 78 S.Ct. 514, and that there would be so "very little loss to society" from its ban, that "an inquiry into its costs in the individual case [can be] considered [] unnecessary." Jefferson Parish, 466 U.S. at 33-34, 104 S.Ct. 1551 (O'Connor, J., concurring). We do not have enough empirical evidence regarding the effect of Microsoft's practice on the amount of consumer surplus created or consumer choice foreclosed by the integration of added functionality into platform software to exercise sensible judgment regarding that entire class of behavior. (For some issues we have no data.) "We need to know more than we do about the actual impact of these arrangements on competition to decide whether they ... should be classified as per se violations of the Sherman Act." White Motor, 372 U.S. at 263, 83 S.Ct. 696. Until then, we will heed the wisdom that "easy labels do not always supply ready answers," Broad. Music, 441 U.S. at 8, 99 S.Ct. 1551, and vacate the District Court's finding of per se tying liability under Sherman Act ยง 1. We remand the case for evaluation of Microsoft's tying arrangements under the rule of reason.
These arguments all point to one conclusion: we cannot comfortably say that bundling in platform software markets has so little "redeeming virtue," N. Pac. Ry., 356 U.S. at 5, 78 S.Ct. 514, and that there would be so "very little loss to society" from its ban, that "an inquiry into its costs in the individual case [can be] considered [] unnecessary." Jefferson Parish, 466 U.S. at 33-34, 104 S.Ct. 1551 (O'Connor, J., concurring). We do not have enough empirical evidence regarding the effect of Microsoft's practice on the amount of consumer surplus created or consumer choice foreclosed by the integration of added functionality into platform software to exercise sensible judgment regarding that entire class of behavior. (For some issues we have no data.) "We need to know more than we do about the actual impact of these arrangements on competition to decide whether they ... should be classified as per se violations of the Sherman Act." White Motor, 372 U.S. at 263, 83 S.Ct. 696. Until then, we will heed the wisdom that "easy labels do not always supply ready answers," Broad. Music, 441 U.S. at 8, 99 S.Ct. 1551, and vacate the District Court's finding of per se tying liability under Sherman Act ยง 1. We remand the case for evaluation of Microsoft's tying arrangements under the rule of reason.