Isn’t the Martingale system where you bet on either red or black on roulette? Then you keep doubling your bet until your colour comes in. The odds are just under half, 18/37, approx 48.6%.
If the jackpot on Nine to 5 is 6.73X, then once the RTP is factored in, the odds of hitting the jackpot will be more like 1 in 7 instead of 1 in 6.73. Martingaling a 1-in-7 system is going to be a lot more remote than Martingaling an approx. 1-in-2 system. I do get where you’re coming from though that playing Nine to 5 in God Mode is like playing roulette rather than a slot.
there are variations with Martingale.
whereas roulette red or black pays evens, hitting a max win on god mode pays 6.73x, so in effect you have 6 spins at each stake where a win would become profitable. so you ould have to up the stake on spin 7 and repeat.
bandit did something similar with reel king already, where if the reel king top wouldnt cover his losses, he would up the stake and keep going.