the point is that Hitler wanted Britain as an ally not an opponent and if things had been slightly different then that might have happened.
the facts are that members of the Monarchy, the house of Lords and Parliament were sympathetic to Germany and Italy.
if Hitler had made a deal with Chamberlain to divide France up so that Britain got back the territories lost in the 100 years war, Germany, Italy and Japan would not have had to use any resources fighting Britain and the Commonwealth which would have enabled them to take on the USSR and the the USA, even if Britain and the Commonwealth hadn't actually assisted them in any fighting.
Germany would still have had all its airforce and navy to use against the USSR as well as all the tanks they lost in North Africa.
Britain was still friendly with Italy and Japan until May and July 1940 respectively.
things could have been very different if Britain had been more inclined to stay friendly with them instead of staying friendly with France, Poland, the Netherlands and Belgium then the War in Europe would have been over in 1939.
even if France, the Netherlands and Belgium had stayed at war with Germany, they would have had a much harder time of it and Germany would have been able to occupy them quite easily.
without Britain as a base to launch an attack against Germany through France and without North Africa as a base to launch an attack against Italy, WW2 would have been won by Germany within a couple of years.
Britain would still have been friendly with Japan so Japan would have been able to forget South East Asia as they would have been getting supplies and support from the British colonies and they could then concentrate on China and eventually the USSR.
Britain would still have been friendly with Italy so instead of a war in North Africa, Italy could have attacked the USSR through the Balkans.
it is doubtful that the USSR could have stood against the combined force of Germany, Italy and Japan, and as even Churchill shared many of Hitler's views on the USSR, it is quite probable that Britain would have joined in against them as well.
with all that territory available to provide resources and no real threat on the doorstep for any of the Axis countries, the USA would not have stood a chance once the USSR fell.