Before you say something, please first ensure you don't say anything stupid...
Yes there are laptops/notebooks with HDMI INPUT port on the market!
For example CLEVO X8100 (and all other rebranded versions such as XXODD XNi8100x, etc.) and who knows how many other ones.
Follows an extract of it's user manual downloadable from http://www.xxodd.nl/manuals/XNi8100x.pdf
and you'll be with me:
"This computer features both HDMI (High-Definition Multimedia Interface) input
and output ports... The HDMI-In port allows you to display external sources such as Blu-ray players,DVDs, set top boxes and games consoles etc. on your computer screen... Make sure you install the HDMI-In driver in order to support any HDMI input sources (see “HDMI-In Driver” on page 4 - 6). When the HDMI-In driver is installed the
GameMate Media Player will be installed...