This is an analysis of Sigma statement, and I fully agree.
M43 users are mostly using Pro Lenses now since users are usually serious hobbyist in birding, macros etc.
Sigma expertise is in prime lenses eg. those ART lenses they made for Sony are great but they do not have the expertise to make better lenses than OM for teles and Macro. In face, the latest teles for Sony made by Tamron I felt is better than Sigma (according to the circle of firends I am in who uses Sony).
M43 users are mostly using Pro Lenses now since users are usually serious hobbyist in birding, macros etc.
Sigma expertise is in prime lenses eg. those ART lenses they made for Sony are great but they do not have the expertise to make better lenses than OM for teles and Macro. In face, the latest teles for Sony made by Tamron I felt is better than Sigma (according to the circle of firends I am in who uses Sony).
One take from a respected industry commentator. Scroll to the bottom: