no matter what they change, chinese can reprogram a new asic board with the correct code to work with the new monero algo, let alone fpga that can be reprogrammed again and again, even if this is memory intensive, monero is big enough to encourage the makiing of an asic for it
Its not that easy to reprogram a new ASIC board. Its needs extensive research to be effecient and needs to be fabricated at a plant. Last estimate I heard it was a few million at least just to get it fabricated. After you get it fabricated you can easily just put it into an existing ASIC board like an Antminer.
However keep in mind that the Miners revenue for XMR is about $90K a day according to,
https://bitinfocharts.com/monero/If you look at ETH its $2 million and BTC is $13.7 million. Hence its not wise to make a new ASIC for their algo because there isn't enough money to be made, and also the risk that they might fork to a different algo is great. BTC most likely will never switch algos hence why money is spent on research and developement for Antminers instead of alt-coin ASICS.
chinese don't care too much about huge profit, they will follow every profit there is out there, take a look at baikal miner, they made an asic miner for every shit algo, even those that were almost dead, if there is profit, asic will come one day, you don't need bitcoin capitalization to develop an asic for an altcoin
chinese also can have chips and other stuff at cheaper price