Speaking of the ODI format, I believe in the future ODI will face similar problems but because of the T-20. Big teams are already not interested in Bilateral ODI as it's losing relevance. That's why ICC brought back the Champions Trophy.
We might see some effects or drastic changes when the existing media right cycle ends (2027).
Already a lot of players are retiring from the ODI format (Mitchell Starc is the latest one). Apart from ICC/ACC competitions such as ODI World Cup and Asia Cup, the viewership remains unsatisfactory for the ODI format. And unlike the case with test format, the ICC doesn't have any intention to offer extra support for this format. You are right about the next media cycle. From 2027 onwards, we may not get a lot of ODI cricket. In short, the ODI has become some sort of a white elephant.
He already won the ODI WC trophy and is Australian, so his retirement makes complete sense because they tend to retire when on top, plus he would like to focus his last couple of years playing tests for his country and if his body allows then possibly IPL as well. I bet even Rohit and Virat would have taken retirement (unofficial) from the ODI if, oh well you know that 'dukhti rakh" lol
Well, Tbh I am okay with the ODI format but I hate bilateral be it T-20 or ODI. I'd prefer a trilateral or quadrilateral series instead of a useless bilateral.
PS: Unpopular opinion, not in favor of T-20 WC every 2 years and ICC tournament every year.