Yes! This is a view often held by non-evangelical scholars. Many evangelical scholars hold that Isaiah was the author of the entire work based upon the unity of the book that would be very difficult to achieve from three authors across three different time periods. They also base this upon how Isaiah is quoted in the New Testament, always accrediting authorship to the prophet Isaiah. Ultimately the evangelical community concludes that even if there were multiple authors, it is undeniable that there is literary and theological unity throughout the book, though there is a split in consensus on this matter.