No, you cannot simply refuse to give Apple their 30% (unless you are yourself big enough to negotiate an exemption; including waiving a 30% fee of your own for Apple's apps on your platforms) if you want access to their huge and very lucrative market.
Microsoft lost an anti-monopoly case because they bundled a free browser with Windows. Forcing your competitors to pay 30% and thus have higher costs and prices than your own competing services is a much more straightforward violation.