The Great Rail Grab: Stablecoin Giants Build Their Own Dollar Highways

Stablecoin titans and their fintech frenemies are getting tired of paying rent on other people's land. They're now constructing their own payment-optimized blockchains to control the settlement layer behind every digital dollar shuffle, as noted in a recent Delphi Digital report.

This trend is crystal clear with Tether-backed Plasma, a public Layer-1 chain fine-tuned for cross-border USDT sprints. After bagging a cool $24 million in February, Plasma officially opened for traffic on Sept. 25, 2025. Not to be outdone, Circle fired up the public testnet for Arc just a month later, marketing it as an open L1 built for stablecoin finance—because why settle for being a tenant when you can be the landlord?

“Owning the payment rails is becoming strategically important,” observes Ran Goldi, SVP of payments at Fireblocks. “Instead of paying tribute to ecosystems like Ethereum, companies are capturing more value by building or controlling the settlement layer.” He dryly notes that rail ownership also lets firms avoid the "seigniorage tax" on their own stablecoin mint-and-burn operations—a classic case of cutting out the middleman, who in this case is an entire blockchain.

The fintech crowd is piling into the locomotive. Tempo has announced its mainnet is live, pitching its network as a merchant-focused settlement layer for high-throughput stablecoin transactions. The project is being incubated by Paradigm and Stripe, because if you're going to build a new rail, you might as well get the guys who print the tickets to help.

Stripe’s strategy is a masterclass in vertical integration, buying up the entire stack. In Oct 2024 it acquired stablecoin infrastructure startup Birdge for $1.1 billion. By June 2025 it had added crypto-wallet provider Privy to its cart, and on Jan 14 it checked out with billing platform Metronome. As Delphi Digital points out, these moves give Stripe control over issuance, wallet, billing, and settlement—basically owning the whole casino, not just a seat at the table.

Alvin Kan, COO of Bitget Wallet, describes stablecoin payment infrastructure as a new “revenue layer.” As the cost of protocol-level settlement drops to near-zero, “value capture shifts to the orchestration layer around the rail: compliance, FX conversion, wallet infrastructure, on- and off-ramps, local payout connectivity and merchant integration.” In other words, the money moves from building the highway to running the toll booths, gas stations, and roadside diners.

Irina Chuchkina, chief growth officer of Wallet in Telegram, frames the rail battle as the next great crypto-fintech showdown. “Stablecoin payment rails could become the defining revenue driver of this cycle, for the same reason Visa and Mastercard became indispensable: not because they issued currency, but because they owned the pipes.” She adds that firms building AI-interoperable settlement rails are positioned to “capture a disproportionate share of the value flowing through these networks”—a polite way of saying they get to skim the cream off the top of every digital dollar milkshake.

In short, the race to own the dollar's digital plumbing is heating up, turning crypto's biggest players into the new toll collectors on the global payment superhighway.