Is the independent Gas Fitter (self employed) losing business to boiler care plans?

Every time I switch the TV on there's a ad for a care plan from British Gas, The AA and others. In fact when I tried to renew my household insurance I was offered a boiler care plan for �70 inc annual service. Independents surely can't compete with this small amount. As a newly qualified gas fitter I'm sure this is killing of the self employed gas engineers. Not sure if I should attempt to set up as self employed ?