I would agree with you if the case was some sort of web service in general, but a GPU server that is only used in-house to run some common pyTorch training jobs is very simple to buy and install and run. Those cloud credits are going to get eaten fast as its a few $/hour, assuming you can get them (those programs are only available if you get your financing from a participating incubator or investor). But yeah if you do get 100k for free from someone you should of course use them first :)