You can watch winter Olympics opening ceremony live online on BBC. The official broadcaster of winter Olympics. However this channel is only available in UK. So, if you outside from UK you need to connect UK server via PureVPN and break Geo-restriction.
Love the biased of only speaking about Direct TV and such but failed to mention that all of the Olympics will be shown on XFINTY at no extra cost on TV, including smart TV web application, Xfinity Olympic special event recordings (on demand will carry all events recorded to view later), and through Computers and any android or phone system via the Xfinity App or the Xfinity TV Web site. where everything will be ready to be played on demand.
Of course this assumes your a member of the xfinity cable system already.