It's be honest, very few of us on this board know the details of Sarah Fisher Racing and Graham Rahal's relationship with TBC , and those that do aren't talking because they like having their jobs.
I have no insider information about this deal but Graham Rahal did not steal anyone's sponsor. TBC did not back out of a contract with Sarah Fisher, and Sarah Fisher did not bring TBC into the sport. The idea that TBC would have made a similar investment in Sarah Fisher Racing is baseless. They are paying for two names, Graham Rahal and whatever established team he lands with (I understand they may have come up with some more money to get a Ganassi ride, but that remains to be seen.)
Sarah made TBC a pitch and they decided to go with someone else, happens all the time in business. Nothing to see here.