If you look where we are, it is about on the same level as if there was no protection at all.
What it means, is that the current system exists solely for the benefits of the patent lawyers. Moreover, if the protection is strengthened it will reduce the innovation further and thus diminish lawyers' area of application. If the protection is relaxed the innovation will boost but it also will leave some money on the table to be converted into actual innovator's revenue.
So the level of protection is stabilized at the level where all the innovation benefits are fully converted into patent lawyer's benefits thus maximizing their revenue from bang for buck perspective without being actually beneficial to a patent holder.
But that conclusion should be pretty obvious, is not it?