关于Minority Business这篇文章的一个问题

endless1990

MESBIC’s are the result of the belief that providing established firms with easier access to relevant management techniques and more job-specific experience, as well as substantial amounts of capital, gives those firms a greater opportunity to develop sound business foundations than does simply making general management experience and small amounts of capital available.
这句话中，gives的主语是谁？是providing established firms吗？

sunniers

我的理解是
providing established firms with easier access to relevant management techniques
and more job-specific experience, as well as substantial amounts of capital, gives those firms a greater opportunity to develop sound business foundations than does simply making general management experience and small amounts of capital available.是belief的具体内容
providing established firms 是gives 的主语大红色的三个部分并列，但是主语还是providing established firms