Instrumentalizing/ widen the focus

Even the pressures, in England, to widen the focus of the
museums sector as a result of instrumentalizing pressures from central government
have tended to depend upon the ways in which museums staff have reacted to these
pressures rather than anything else (Gray 2008):

The pressures the central government gives museums make them (museums) widen their focus? Maybe to support their government? So museums are instrumental in doing what its government wants it to do?

What does widen the focus of the museums sector mean?

could you help me understand those sentences above? Thank you!