yeah thats why we read the works of other theorists that have lived since him and have taken his ideas an updated them and applied them to new circumstances at every moment since he wrote his books, for fucks sakes most communist dont even call themselves Marxists most of us call ourselves Marxists Leninist. Also if u actually read anything Marks wrote u would realize that while specifics are almost all outdated the ideas themselves and methods of analyzing and understanding things hold up just fine.