Reliability was a problem in the early US and Soviet years. All the new German ideas needed to be understood and worked with under local conditions.
Operation Paperclip https://en.wikipedia.org/wiki/...
gave the US a lot of German experts with no questions asked.
Over the years the US had to understand what was been constructed for them.
India had to build its own rockets and now has the local technology that is well understood and can be funded.
China faced the same issues with its advanced technology. Buy in or wait for local skills.
China now has the industrial capability and is ready to move on with its own rocket development at its own pace.
Different nations have understood to not out spend their space budgets.
A generation of the UK Skynet satellite https://en.wikipedia.org/wiki/...
would be the other way to do space science.
Buy hardware from the US and try and get local experts to work on a new UK satellite. When that fails just buy into an existing US satellite product.
Lots of nations have to learned to understand space science in different ways. Some have much lower budgets too.