Perhaps the problem isn't that the micro market died but that the demand for micro packs died. That's two separate things. Once you have a couple packs for your micro, you shouldn't need anymore for quite some time. Especially since most of the people buying micros are NOT racing them competitively.
Of course, there is a new market for that style of pack, receiver packs for 1s cars. Micro packs work great for that too.