Reverse engineering something is much less fun than creating something new
ReactOS (as well as mono and wine) are destined to be playing catch-up with whatever Microsoft does. This puts them always one step behind their “competitor”.
Even further, Microsoft can always make it harder for immitators, by introducing complex new libraries and APIs.
And even if you manage to get over the previous hardles, Microsoft can always sue you for “copying their intellectual property” , effectively killing all your hard work.
I applaud what the ReactOS guys are doing and wish them the best of luck, but on the other hand I believe they have chosen a very difficult path.
for Firefox specifically, Debian chose version 10.0 because it's an Extended Support Release version (http://www.mozilla.org/en-US/firefox/organizations/faq/) . In order to be able to support it with security fixes in the next 2-3 years. It makes perfect sense if you think about it.
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I applaud what the ReactOS guys are doing and wish them the best of luck, but on the other hand I believe they have chosen a very difficult path.
for Firefox specifically, Debian chose version 10.0 because it's an Extended Support Release version (http://www.mozilla.org/en-US/firefox/organizations/faq/) . In order to be able to support it with security fixes in the next 2-3 years. It makes perfect sense if you think about it.