Polymarket said back in December that they wanted to leave Polygon and build their own Ethereum L2.
No chain has shipped yet, no date given, but the intent is out there.
The dependency since then has only gotten worse.
March 2026 numbers:
→ 77% of Polygon's gas consumption
→ 67% of gas fees
→ 55% of all transactions
If you look at the bigger picture, Polygon is highly focused on payments. Stablecoin P2P volume is growing completely independently of Polymarket. That growth is real and it has nothing to do with prediction markets.
But, if you look at the economics, a prediction market generates constant, high-frequency transactions that pay priority fees. A stablecoin transfer costs almost nothing in gas. Those two things are not interchangeable. You'd need dramatically more payment activity to produce the same fee revenue that one prediction market app generates today.
Polygon's team says if Polymarket leaves, blockspace opens up, gas adjusts down, and other apps fill the gap over time.
That's reasonable in theory.
But the claim that Polymarket "isn't most of the chain" by transaction count doesn't hold up, it's 55% of all transactions, not just gas.
The payments story under Polygon is legitimate.
But when a single app accounts for the majority of your chain's activity across gas, fees, and transactions, and that app is openly working on leaving, that's not something you can hand-wave with "other apps will fill the gap."