Easy question! They want to sell non-alcohol beer because of “no tax”. Tax of beer is very expensive in Japan. Income of 200 yen beer and 100 yen non-alcohol beer might be almost same. And actually, non-alcohol beer is not 100 or 120 yen for 350ml size. That is around 140 to 150. Why? User compare to 200 yen beer and not 120 yen tea. We feel ‘cheep’ even it is 140 yen. So, it is very easy that the beer companies want to sell non-alcohol beer rather than beer.