This not only is nearly incomprehensible (the writting), it is also a nationalistic rant that completely ignores reality. Oh well.

Blame Dassault, easy target)
Mind you, the European also added weight to the EFA project to a) exclude France with an aircraft too heavy for its carriers and b) exclude SNECMA M88 in favor of the EJ-200. So yes, our beloved british "friends" led by that Thatcher [insert lots of rude words here] quite cheated the game, too.
Where to start ? yes, by 1948 the public companies were unable to make a decent jet (bar the Vautour). SNCASO Espadon was to be the answer, but weighed too much and climbed like a led sled. At least the Ouragan worked and did not killed its pilots like too many other prototypes did. Dassault went the cautious way, and it paid. Same for the Mirages.
Dassault learned the hard way to ignore the Armée de l'air blue sky Operational Requirements (O.R) and build palliatives on private funds, then the palliatives become permanent after the AdA recognized that, while the O.R could be done, except at horrendous cost.
Dassault build a shitload of prototypes in the 60's only to threw most of them after the AdA changed its mind, and despite stellar flight tests program. Mirage G, Mirage G8, ACF are good examples, the later was scrapped while 80% complete, in 1975.
British aircraft makers faced the same conundrum - the RAF was no better than AdA, in the sense its Operational Requirements were complete madness (see TSR-2 - splendid aircraft, but budget killed it, as Sydney Camm perfectly understood).
say what you want of Dassault, but facing the same conundrum as its british counterpart (blue sky O.R) they did a far better job surviving to the present day.