2) Why indeed. どうしてでしょうね。 "Why indeed," might be sort of a difficult phrase to understand. It depends totally on the situation. It could be very negative, meaning
are so many good reasons. I don't even understand why you're asking the question.
3) norm 標準 "Norm" is very similar to average. It means what most, in this case, companies do. "Normal" is a similar word, but it tends to be used much more broadly to mean not strange or not unusual.
4) socially responsible 社会的責任 This is a very controversial kind of a thing these days. Some people say, companies because they are part of the society, must give back to the society. They should be very considerate of the people around where the company is located and functioning. Other people say that
give jobs, their workers spend money, they keep the economy moving along so that everybody benefits.
CSR = corporate social responsibility 企業の社会的責任
5) a loaded question 含みのある質問 "A loaded question" is a question that's often meant to lead the
to influence another person. It tends to have all kinds of hidden or background meanings.