I don't see how this affects innovation. Labor interests need to be taken care of too in a startup-friendly economy. In fact, I will probably never work for a startup simply because of the lack of safety net here in the states. That's a risk founders don't seem to consider too thoroughly - the lives they're entangling with their experiment.
Also on checking it turns out I misremembered. The UK went to three day weeks during this time:
https://en.m.wikipedia.org/wiki/Three-Day_Week
TV stations were also required to shut down at 22:30 to conserve power. Bodies went uncollected, hospitals shut down, TV stations routinely went dark even when there was sufficient power. It's impossible to overstate the apocalyptic state of Britain in this era. You can read about it here:
https://en.m.wikipedia.org/wiki/Winter_of_Discontent
The government was so left wing any thought of building a high tech ecosystem was out of the question and even keeping existing 1930s era industries was hard. Whilst the Americans were building Intel the British were living through something from a disaster movie. The 1980s were spent partly repairing the damage. By that point the US tech ecosystem was well under way.