All these points have been addressed, & refuted. You have picked one point, partly addressed it, & then carried on repeating your previous claims as if nothing had been said in response to them.
Will you address any of these points, all of which have previously been made?
1) Japan can, if it wishes, get T1 Typhoons on lease pending delivery of Japanese-built Typhoons. This would enable rapid delivery. The T1 Typhoons would be returned. This satisfies Japans requirement for local production.
2) Japan can, if it wishes, get T2 Typhoons delivered from Europe from production slots currently assigned to Italy or other consortium members, pending delivery of Japanese-built Typhoons. The European-built Typhoons could be retrofitted with Japanese equipment. Due to a higher proportion of Japanese subsystems (e.g. a Japanese AESA radar), the total Japanese content should exceed that of the licence-built Typhoons, despite a larger number being imported directly. This satisfies Japans requirement for local production.
3) Even with neither of the above, Japan should be able to have Typhoon coming off a local production line, customised to Japanese requirements, within 5 years. Required customisation consists of the incorporation of Japanese susbsystems, in particular avionics. Integration of these can be conducted in parallel with setting up production, with little risk.
Compare the F-35:
1) US resistance to local variants is so strong that even the only Tier 1 JSF partner has had a fierce dispute with the USA on the minor point of integrating its own weapons. The prospects for a version with substantial Japanese content therefore appear extremely poor: Japan is not even a JSF partner.
2) There are no in-service F-35s for Japan to borrow.
3) There are no production slots available for early delivery of F-35 to Japan.
4) Even a Tier 2 partner has been strongly discouraged from anything other than an assembly & check line, rather than the full production line Japan seeks. The prospects for the degree of local production sought by Japan therefore seem poor: Japan is not even a JSF partner.
5) If consent is given for a Japanese production line, it will not be possible to set it up until some years after a Typhoon production line could be delivering aircraft to the JASDF. Typhoon production is in full swing: JSF is still in development, with production so far consisting of pre-series development & test aircraft (despite labels to the contrary) only.
6) The USA says that due to the heavily integrated nature of the F-35, incorporation of non-standard systems, such as sought by Israel, is not practical. What does this tell us about the likelihood of a Japanese customised version?
7) The USA has had a prolonged disagreement with the only Tier 1 JSF partner over that partner being allowed to perform all its own F-35 maintenance. What does that say about the likelihood of full production being allowed in Japan: Japan is not even a JSF partner.
Note that your arguments against a Typhoon purchase all apply at least as strongly to an F-35 purchase. I imagine that negotiations over how or if Japanese content could be introduced would be neither easy nor quick. The Typhoon partners, on the other hand, have already expressed a willingness to facilitate any & every modification Japan may choose to make.
BTW, an interim F-2 purchase would need a quick decision. The 12th & last annual contract to LM for components was signed in April 2008, with deliveries beginning September 2008. Long lead items are going out of production as we write . . .
LOCKHEED MARTIN RECEIVES TWELFTH ANNUAL CONTRACT FOR F-2 COMPONENT WORK | Lockheed Martin