Definitely, heat dissipation and power envelope limitations on laptops are still a major issue, but with power gating coming standard on most chips and very aggressive p states, average power usage is down by double digit margins on your average CPU over the last decade.
This is very beneficial for servers and workstations too, as it keeps your power bill much lower, and makes it not financially viable to stick around on 8+ year old hardware, where it draws 250 watts for half the performance of a year or two old system, that will pull 60 watts minimum, and while topping out at 250 watts, will like average around 70 watts or so, saving you about $180 a year at $0.12/kwh.
Edit: Missed a zero, reworded last sentence.