Maybe it will be end of the BOFH or the eternal deployer (the guy that does not everyday, just deploy software, I saw some of them in my life). Small web companies maybe does not need a sysadmin, since they are focused on one application generally this will not be a major problem for them if they know some best practices.

The majority of sysadmins that I know works in the financial market, telecommunications industry and ISPs, mainly in data centers, helping developers who does not know about the infrastructure or as network operators.