How they compare
Both have plenty of female domination, but Kink covers far more.
Kink has dozens of BDSM and fetish channels, professionally made since 1997, and shows performers' consent and aftercare. It's $119.99 for three months, $179.99 for six or $249.99 a year with downloads.
Femdom Empire is a femdom specialist: 3,000+ dominatrix clips with strap-on, tease and humiliation themes. Clips are short, about 10 minutes, and few new ones came out in the past year. It's $34.99 for the first month, then $25.99 a month.