Complex sentence: The Walt Disney Company pioneered and is the only film company and theme park company to have done theme park attraction to film with lack luster results for most of these films except for the Pirates Of The Caribbean series.
Split into simpler sentences: The Walt Disney Company pioneered and is the only film company and theme park company to have converted theme park attractions to film productions. However, lack luster results were achieved for most of these films except for the Pirates Of The Caribbean series.