Overall I agree with your points - in general people should stay focused on building something useful that people want. I think the macro trends become increas

Overall I agree with your points - in general people should stay focused on building something useful that people want. I think the macro trends become increasingly important depending on the stage of your company. E.g. Paypal raised $200 million at the peak of the bubble, and this money saved them from burning out in the downturn when raising capital became very hard. If you are 2 people bootstrapping this does not impact you as much. If you are a later stage company that is not yet profitable, and you need to raise money, macro trends are incredibly important.