Has there been an asic where batch 1 didn't pay itself off in a reasonable amount of time?
Even the D3s paid themselves off fairly quickly, just not batches 4-5-6...
Easy, just take a look at the Cryptonight ASICs. They in no way paid for themselves since the Monero team was quick to fork.
I hope you seriously don't encourage people to buy these ASICs. They are not what cryptocurrencies were invented for. ASICs turn crypto into a simplistic money making scam.
Most cryptos are money making scams. 0 cares given as long as I make money.