some waited, some didn't. I can't pretend to know why.
My personal guess/opinion is that those governments who's only objective was to get people isolated on exposure would at least have leaned towards the apple/google solution when it became available. Those who had ulterior motives (or had already rolled something out) would be less likely to wait for it.
One surprise for me here is Norway's initial implementation, which it later re-evaluated[1], you'll also see (at least at that point in time) that Bahrain and Kuwait did not. Bahrain even turned it in to a game show.
Edit: just to add, you'd see for example a place like Australia looking in to the solution once available, last paragraph here[2] - my opinion is that these countries do not feel threatened by their general populace, thus don't feel the need to turn everything in to a mass surveillance tool if they don't need to
My personal guess/opinion is that those governments who's only objective was to get people isolated on exposure would at least have leaned towards the apple/google solution when it became available. Those who had ulterior motives (or had already rolled something out) would be less likely to wait for it.
One surprise for me here is Norway's initial implementation, which it later re-evaluated[1], you'll also see (at least at that point in time) that Bahrain and Kuwait did not. Bahrain even turned it in to a game show.
Edit: just to add, you'd see for example a place like Australia looking in to the solution once available, last paragraph here[2] - my opinion is that these countries do not feel threatened by their general populace, thus don't feel the need to turn everything in to a mass surveillance tool if they don't need to
[1]: https://www.amnesty.org/en/latest/news/2020/06/bahrain-kuwai...
[2]: https://www.reuters.com/article/us-health-coronavirus-apps-t...