How long before 3rd party efm lens supplies dry up?

It's not as easy to find particular new Canon brand E-FM lenses as it has been. Clearly supplies are drying up either from lack of production or futureproofers are starting to hoard. New Canon lenses will dry up quickly but used will be plentiful. some excellent New Third party efm stuff may disappear more quickly simply because of the much lower production numbers . Might be the last chance to buy some new very excellent 3rd party lenses like the Sigmas, the Laowa 65mm Macro,and the ridiculously low priced TTartisan 7.5 fish eye with a rear element screw on ND filter for $150. How cool is that? Now that I've acquired all the Canon efm lenses I will ever need. I thought it might be a good idea to think about some of the cheaper interesting off brand fun gear before it's gone. just a thought

@bgreg has written:

It's not as easy to find particular new Canon brand E-FM lenses as it has been. Clearly supplies are drying up either from lack of production or futureproofers are starting to hoard. New Canon lenses will dry up quickly but used will be plentiful. some excellent New Third party efm stuff may disappear more quickly simply because of the much lower production numbers . Might be the last chance to buy some new very excellent 3rd party lenses like the Sigmas, the Laowa 65mm Macro,and the ridiculously low priced TTartisan 7.5 fish eye with a rear element screw on ND filter for $150. How cool is that? Now that I've acquired all the Canon efm lenses I will ever need. I thought it might be a good idea to think about some of the cheaper interesting off brand fun gear before it's gone. just a thought

Sigma 16 and 56 seem next steps then?
56 is a tiny gem if you like the 85 equiv focal length - brilliant little lens. 16mm great too but a bit big - a smaller f/1.8 would make more sense for M