The stock is extremely low volume with a market cap under half a billion.
The stock has options, but they are essentially illiquid (volume near zero).
My 100% guess of the micro-structure is logically a MM would consider some limiting factors such as extremely low volume of stocks, open interest of calls, call/put ratio, current IV chain, not-too-large market cap, and others.
When the open interest of calls has been already close/over to the average availability of stock volume potentially, how could the MM offer you unlimited number of calls at whatever strikes you like, in case you really will later want to settle/acquire physical stocks that the MM could not supply (at whatever price) for settlement after expiration?
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