Yes, they certainly can. Modification of intellectual models in the light of new evidence is one of the cornerstones of the scientific process.
Models need to be changed as often as deemed necessary by the market. Different types of models need to be changed at different times.
Trax Models was created in 1986.
Silent Models was created in 2006.
Frog - models - was created in 1931.
Stochastic Models was created in 1985.
Ford Models was created in 1946.
Munich Models was created in 1992.
Expecting Models was created in 2001.
Monogram models was created in 1945.
Twining Models was created in 1920.
Wilhelmina Models was created in 1967.
well you know these days...