You paid them money. You got a service. If you bought groceries from a grocery store every week, and one well you showed up to find they were closed, would you feel like you were owed an explanation?

> Any usage on your part is an investment in the company. Of course you would feel entitled to know why they are ceasing effective immediately

Going with the Steelman path - This is true if I sincerely believed in the company, likely promoted them to others, and was emotionally invested. I definitely would want one. As a shareholder, I would demand one.

Anyway, based on the OP's tone of this thread, I doubt they were emotionally invested let alone a paying customer - but assumptions.

Not an investment, an exchange of goods and services.

I’m not owed explanation if my local gas station closes down and I bought a tank of gas from them the day before.