Quick note on the Profit Maximizing motive...

So with an AT&T messaging package you get 30 days to use it. Today is the 31st of January. Purchased today, what days would you think this would last till? Now don't forget, February has 28 days. So... 28, plus two should give me today and the 1st of March no? The entire day I would think. If they were really doing it properly, they would go thirty days from the exact time of purchase – which should be 12:30pm on the 2nd of March. However, in actuality, they only give me until 12:01AM on March 1st. So they call all of today as one whole day and then they give you until March 1st (the 30th day), great - EXCEPT - they only give you ONE minute of that day!?!?! So in essence, I got about 28 1/2 days of usage. Hmmmm.... And this system is best for me and the consumer? No, they want us to give them the most money possible, while they give us the least service for that price... And the system rewards them for it. They achieve a higher profit margin, and their share price goes up, yet the customers get shorted. How is this right? Yeah I could go to another carrier, but they would have some other tricky little quirk just like this one. They are after all in competition for investors – who are of course after the same returns and the same profits... and in competition to see who can get the most out of us for the least effort and cost. I just don't see how that is ultimately a good motivational foundation for a system to be based upon.