First some background.
Tories supporting leaving the EU and No Deal have been part of the Tory Party since the days of Margaret Thatcher. Their influences are Patrick Minford and Friedrich von Hayek who argued for neo liberal economics including low taxation, light touch regulation and the small state. They believe in the opposite of the Welfare State, that it is the responsibility of individual to fund healthcare, education etc. The function of the state is to provide the right conditions for businesses to flourish , law and order and defence etc. Very much the American model. One of their early proponents was Keith Joseph who was a strong influence on Margaret Thatcher. Margaret Thatcher's politics represented a move away from the post war consensus on economics and the welfare state. She began these economic reforms but she did believe in the Rule of Law (unlike the current Government with its reforms to the power of the judiciary and Supreme Court) and the Common Market, It was she who pushed for the single market.
The Tory Party was split in 2 with the old style conservatives , nicknamed the Wets and the more neo liberal types like Michael Portillo and John Redwood etc. There was always a balance until the Maastricht and Lisbon treaties leading to greater integration of the EU. The neo liberal Tories started to flex their muscles and began the long campaign to leave the EU. They were aided and abetted by venture capitalists, people like James Dyson, Tim Martin and Jim Ratcliffe all of whom dislike our current labour laws. They want to hire and fire at will and dislike the so called 'red tape' (although it doesn't seem to have put Ratcliffe off that much as he is locating his car manufacturing in France).
So back to No Deal. Many Tories want No Deal because it will free them up to change laws on employment, the environment, food standards etc. I am not sure the Government actually want a deal that much. If you want to know what their plans are read Britannia Unchained written by Patel, Raab, Truss, Kwarteng, Skidmore
link.springer.com/book/10.1057/9781137032249
This is what they think of British workers
The book asserts that the UK has a "bloated state, high taxes and excessive regulation". It then says:
The British are among the worst idlers in the world. We work among the lowest hours, we retire early and our productivity is poor. Whereas Indian children aspire to be doctors or businessmen, the British are more interested in football and pop music.
I think we are in for a turbulent time. It will take many years to change the focus of the economy. Margaret Thatcher caused a lot of pain the 1980s with her deindustrialisation policies leaving many areas in the North, Scotland and Wales decimated, feeding the north/south divide. I think it is ironic that many of these areas voted for more of the same by supporting Brexit. In the end we will be more like the US.