Governments should invest more into archaeology.
Also, some sponsorship possibilities must not be ignored. Private companies should be encouraged to sponsor archaeological researches.
In the beginning of this century, most of the countries invested into archaeology very much because they were in need of evidencing that their nation existed many times before. These days, many countries are not in need of finding a "national history". That's why, the money resources of archaeology being decreased. But we need archaeology and we must find some more money for it. If it is not the government, there should be another kinds of sources.