It's a nonsense argument either way.
The Premier League allow sugar daddies to make losses of up to 105m over 3 years. That gives you plenty of scope to invest and get to the 'upper echelons'. Once you qualify for Europe, UEFA allow you to make losses of up to 40m over 3 years, not great, but by then you're earning CL revenue, making a load from the PL TV deals and will have better commercial deals. If you're willing to put your money where your mouth is, investment in infrastructure, i.e. increasing the capacity of portman road, you'll be making more money there too. You'll naturally be able to start charging for tickets more. Furthermore, FFP will actually help you to compete against the oil rich clubs who can invest 10x more than you can with their bottomless pit of cash.
All FFP does, even before the revised UEFA ruling, is slow down the process and makes growth a little more organic. Nothing wrong with having to earn your way to the PL title over a 10 year period rather than simply spending half a billion and winning it overnight.