In the U.S. number portability didn&#x27;t happen until November 2003:<p><a href="https:&#x2F;&#x2F;apps.fcc.gov&#x2F;edocs_public&#x2F;attachmatch&#x2F;FCC-03-284A1.pdf" rel="nofollow">https:&#x2F;&#x2F;apps.fcc.gov&#x2F;edocs_public&#x2F;attachmatch&#x2F;FCC-03-284A1.p...</a><p>Unlocking wasn&#x27;t a requirement until last year:<p><a href="http:&#x2F;&#x2F;www.cnet.com&#x2F;news&#x2F;president-signs-cell-phone-unlocking-bill-into-law&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.cnet.com&#x2F;news&#x2F;president-signs-cell-phone-unlockin...</a><p>The big thing which I believe really killed business options, though, was data pricing. Before the iPhone made affordable unlimited plans the expected default, it was assumed that anyone who wanted data was a business user on an expense account and the pricing was so high that everyone I knew treated app usage as an emergency-only measure rather than a part of daily life.