Objection to "社会责任大小和银子多少也没有正比关系": Taxation (one of the social responsibilities) is based on income/money, roughly to say, the more you earn, the more you should pay, which approves that social responsibility has positive correlation to money.
Social responsibilities are not only confined to money. One of it is to do the right thing. In this sense, everybody, regardless how rich/poor he/she is, doing the right thing is his/her responsibility.
Objection to "道德要求,只能期待不能强要": We can't enforce people to act morally outside the boundary of the law. But people still has the freedom to judge and discuss, or send the moral pressure for people not doing the right thing. Such discussion, sometime, will feedback to the legal system and form laws to regulate some abominable behaviors.