Why didn't American-born Loyalists escape to Britain?

One aspect of the Revolutionary War that is often overlooked is that there were many more Loyalists and non-interventionists, including many thousands of Quaker colonists and other pacifists, than conventional popular histories have described. This substantial loyalist opposition to hostilities with Britain meant that the Revolutionary War was also sort of a civil war, pitting family members and former friends against each other. Although Britain expected the Loyalists to fight for them, there were fewer enlistments than expected, and the pacifists refused to fight on moral grounds. There was also social pressure from friends and family to avoid overt military activity in support of the British. This apparent apathy caused British distrust, so perhaps some Loyalists feared they would never be accepted by British society if they did try to emigrate, even if they had fought for England.
Once the war was over, some Loyalists did flee the United States to Britain or the British Commonwealth, including Canada and the Caribbean, and they were compensated for their lost property by the British government. However, once the war was ended, many more wanted to start over, staying with their families, friends, and homes and becoming American citizens.