What’s the deal with all of those FREE POS Systems (that mostly banks offer)?

OK, a free POS System sounded very tempting to us at first glance as well, and since only banks were offering them at first, we knew it had something to do with forced lengthy contracts, at a "not so competitive rate", for credit card processing with a certain processor (not a processor of your choosing). And that deal doesn't sound too bad either, when you consider we are discussing a full POS system, meaning you get the POS Software and you also get the POS computer hardware, all together, all free of charge, so how bad can this credit card processing deal be, right ? But if you thought that it sounds too good to be true, then you guessed it, it is.... We called a few of these companies offering this kind of a point of sale system for free and here's what we found out (the story repeated to the minutest detail for all of these companies)... I. Yes, you get a free pos computer, but that computer is closer to a tablet than a proper computer, with proper hardware and computing power. No big deal, it is free, so we shouldn't complain about this - just thought you should know. II. Yes, you get a free pos software, but that basic POS Software cannot compare with software that has hundreds of features and integrates with a ton of POS Hardware peripherals and other equipment, these things can mostly support only a barcode reader, and a printer and literally just replace a cash register (no extensive business management or employee management functions there). So it won't be a POS Software that you run your entire business on, it is just a fancy cash [...]