I think part of it is because the classical styles have become easier to mass produce. An ornate dress or complex molding can be churned out at a rapid pace th

I think part of it is because the classical styles have become easier to mass produce. An ornate dress or complex molding can be churned out at a rapid pace these days, and knowing that cheapens the effect of it. Due to automation complex construction and details are cheap, what is expensive is precision and high quality materials. I guess some of it is also that we can’t even bring ourselves to do things how they really used to be done. We easily produce cheap imitations but won’t create the real thing. 300 hand sculpted marble statues lining a hall, compared to 300 computer generated 3D printed “sculptures” lining a hall. The idea is similar but the second one likely won’t have the same quality or impact.