A few things. First, please stop the Sony FUD as it is simply not true. It has been stated multiple times by both Tim Bird and Rob Landley that Toybox (which is, like BusyBox, a reimplementation of standard Unix and Linux tools) did not come from Sony. Ask Rob, ask Tim, they are both very approachable about this.
Second, Samba has been enforced in the past (as the SFC announcement says), they are just offloading the work onto SFC, so this is not exactly new. Sure, I expect that there will be more enforcement work being done for Samba (and it is badly needed).
Third, Wine is not used as much as you think. I have seen it only a few times in the last 7 years in some management software for wireless devices. Calling them a "key player" in a commercial Linux ecosystem is a bit far fetched. It would be very interesting to see enforcement being done for Wine though.
Fourth, the Linux kernel has already been enforced many times (in Europe). So it is not that it 'is now available'. That would be denying 8 years of enforcement work being done by gpl-violations.org and other copyright holders in the kernel.