Already happening... The company I work for is already now mandating Virgin Trains or GNER for domestic travel, rather than BA or BD or whatever, because they won't risk us losing laptops - not the laptop itself so much as the inconvenience and the sensitive data. Most of the company's bookings are short notice peak period, so it means higher fares. And next week, some folks are going from the UK to the USA via Paris, with the journey to Paris on Eurostar, to avoid the stupid regulations here.
If the government don't change the rules soon, this is going to cripple airlines for years to come. The sad thing is that taking stuff on isn't a problem - in every other country in the world hand baggage is still allowed including when flying from the USA to the UK, although more stringent inspection is commonplace. The thing that is different here is that the government and/or the airport operators aren't prepared to do the physical inspections, finding it easier just to impose an idiotic ban on everything.
Andy