We have an interesting strategy for those who hold ARB tokens.
It's important to note that the spread (price difference) between these two networks is relatively stable, at least until centralized exchanges (CEX) start withdrawing Arbitrums to the Ethereum network. During this period, you can earn a profit of 10-30% per week or per cycle.
Additionally, it is worth mentioning that ARB is not the only coin on the Arbitrum network, and you can find many other similar pairs. This strategy takes some time, but if you don't want to wait for the prices to align, you can set a profit of 5 to 8 percent in a trading bot to cover the commission expenses.
We tested this combination at 10 percent, transferred it to the Ethereum network, and waited for about a week before returning to the exchange and obtaining a 10 percent profit.
P.S. Don't forget that there are other coins in the Arbitrum network, and you can find many similar combinations