one reason package appearances may be so similar for differernt brands in the same product category is that marketers want their products to be seen as representative of the category as a whole.

저기서 reason package appearances를 어떻게 해석해야 할지 모르겠고
cataegory 다음에 왜 바로 is 가 나오는지 모르겠어요.
so~that 구문으로 product 다음에 that 이 생략된건가요 ㅠㅠ?
알려주시면 감사해요~