Would that work, though? A change of the magnitude Henry was pushing for would really need the support, or at least acquiescence, of most of the nobility, and being seen to impose a change of religion without even consulting anyone would make Henry look arbitrary and tyrannical, possibly stirring up enough opposition for him to get overthrown, or at least forced to change course.
It was actually less of a change than many wanted, Henry just used their beliefs to gain what he wanted (more money and a new wife). Other monarchs suppressed or supported their country's Reformation movement, King Henry hijacked it.
The majority of the changes occurred later under King Edward VI and Queen Elizabeth I.
Many English resented the idea that an Italian (the Pope) could dictate matters of faith to them. Many previous Kings had acted to limit the power of the Pope, such as Richard II's Statute of Praemunire (1392).
Martin Luther's ideas (and that of other Protestant writers) had begun to arrive in England, and convert people. The first mass produced Bible in English had already had it's first printing.
Henry VIII already looked arbitrary and tyrannical, especially because he was regularly replacing wives, ministers, friends, bishops, etc. He did consult people, but selected advisors on the basis of whether he agreed with their opinion.
His charisma and political ability let him get away with many things that other English Kings could not.