The status quo is already effectively a single-state solution. Israel is the only party with an army, the only party that can elect politicians, the only party with airports and a harbor, and a functioning economy. Israel also has almost total control over Golan, West Bank and Gaza. Why would Israel award citizenship and the right to vote to the oppressed minority?
If the majority between the river and the sea wanted a pluralistic, democratic and secular state it would have happened a long time ago. The status quo is what the people of Israel want (revealed preference by their votes). And Palestinians don't get a vote.
This is a gross simplification. Both Hamas and the Palestinian Authority have tried to hold elections, last time was in 2021. The Palestinian Authority actually held local elections in the West Bank that year. However being occupied does not make elections easy. In 2021 in particular the national elections fell through because Israel didn’t allow Palestinians in occupied East Jerusalem to participate. Hamas wanted to hold the election despite that, but the Palestinian Authority cancelled the elections.
Hamas was elected almost two decades ago, and Palestinians in Gaza have been occupied ever since by Israel. Yes, they do have a political system, but said political system is not democratically driven. It is driven by the Israeli occupying forces, in ultimate control by Israeli voters. Both the military administration, Israeli politicians, and Israeli voters show no desire to change this.
If the majority between the river and the sea wanted a pluralistic, democratic and secular state it would have happened a long time ago. The status quo is what the people of Israel want (revealed preference by their votes). And Palestinians don't get a vote.