Why is funding harder? Culture and laws we created as a result. We're far less accepting of things like leverage M&As, options, flexible employee remuneration and conditions (especially for start-ups), etc. VCs therefore need to clear a far higher bar to mitigate risk, meaning only the very best proven ideas receive funding.
Further, investors tend to prefer lower, but more stable returns. There is much less appetite for moon-shots. I could speculate that this is partly driven by the tax structures. Why risk $50M if you know that 60% of the rewards would be taxed? You would use a much more conversative risk ratio, preferring 5% returns but very low risk. This extends to individuals, too. Why start a business when most of the rewards from the considerable risk will be taxed? Especially given the onerous business laws.
Denmark and Sweden are notable standouts. Our laws make it easy to start businesses, operate, and fire workers as needs change. However we still have very high taxes.
There is one final thought: most people I know do not aspire to become Ferrari owners with five mansions. We aspire to happy and healthy families with good friends, good wine, and cozy holidays. If this is one's aspiration, risking their financial stability for something they don't care about would not be very common. Danes who do aspire for the Ferrari lifestyle leave for the US.