With the release of PlayStation 5, Sony introduced one of the most innovative controller designs and technological developments in quite a long while. The DualSense controller has the potential to completely change the feel of playing a game with proper support and implementation for its haptics and adaptive triggers, though these features didn't make the transition to PC except in select cases.
A particularly noteworthy problem with using Sony DualSense controllers on PC is that users couldn't update their firmware without access to a PlayStation 5 console, though this may be changing in the near future. Namely, the official PlayStation website seems to have a cached version of the EULA for a DualSense firmware updater application, and it could be coming out soon.
While DualSense's unique features appeared in COD: Vanguard and similar titles, the implementation of this functionality on PC depends almost entirely on game developers themselves, and is therefore seldom included. This doesn't affect game or controller functionality, however, unlike the inability to update a DualSense controller without owning a PS5. The newly-revealed EULA, though deleted at this time, shows that Sony is working on a solution to this particular issue after all, even though there wasn't any information available about this beforehand.
Having the ability to update Sony's latest controller iteration is crucial for its functionality. These are complex devices that need software support to work properly, as shown with last year's DualSense firmware update that fixed a variety of bugs and feature implementation problems. PC users, however, didn't have a way to download said update if they didn't have a PlayStation 5 as well, which meant they were stuck with inferior products for the time being.
There's no telling when, exactly, Sony could be launching the firmware updater for DualSense, but the fact that there's a proper EULA already in place implies that the process could be further along than was initially believed. It's worth pointing out that Steam supported DualSense controllers from the very start, but the users' inability to download official fixes and updates sourced from Sony meant that this solution remains less than ideal until the official updater software comes out.
As pronounced as firmware problems might be on PC, it's also worth pointing out that this won't really do much with other, more serious reliability concerns that have sprung out around the controller. Some claim that the DualSense might only survive around 400 hours of use before the user begins experiencing stick drift, and it remains to be seen whether Sony can address these problems at all, given the complexity of the device.
Source: PlayStation (Cached)