Good things come in small packages

Why is this good stuff so frigging small? Roughly 8 cm in height with a base diameter of 4cm and having a volume of mere 80ml, this small thing is packed with billions (!) of live lactobacilli Shirota strain (good intestinal bacteria). Why don't they make a liter serving of this good stuff, just like mogu mogu? I'm 100% sure that I'm not the only one with this sentiment. 

Apparently, the reason behind this is to avoid contamination due to prolonged air exposure from repeated opening and closing of the bottle if it did come in 1 liter serving. Well, fair enough. Also, there's no harm at all in drinking lots of this stuff... I guess I just have to get as many as I want.