> 1. If they "go out of business" you will save money with the new model, because instead of paying for a year of the license in advance, you are paying by month.

Oh, it's much worse than that. With the old licensing model, if JetBrains went out of business, you'd be left with an antiquated IDE that works. Under the new model, you'd be left with nothing because the IDEs need to call-home and verify against a licensing server. Who knows what happens when the licensing server gets decommissioned (I guess you could ask EA customers).