Bmyers, good point. Considering the price point of a decent laptop now is about half the costs of buying a new seat. Unless you buy my dream machine (Samsung X25) which I still can't afford or justify. : )
Now for a one person or two person firm which is running as a partnership or a sole proprietor, they probably are still legal based on the info you have provided above. A single proprietor obviously can install the same license on his workstation and laptop using a standalone license as log as he accesses only one license at a time. As a sole proprietor , not a problem. Sort of works alone the same lines when it becomes a partnership, as long as each partner sticks to their machines and uses each license correctly.
The moment you have employees or become incorporated, that goes out the window. A large firm as I pointed out before can weather this better than say a 5-12 person firm. Actually it's those firms that are in the 5 person realm or slightly larger/smaller that hurt the most. Their revenues are not as stable but their overhead is disproportionately larger than other firms.
Most firms I believe intend to be legal and budget accordingly. But the mindset is one license=I user. Not 2 license= 1 user. Wrapping your brain around that issue is going to be a tough pill to swallow.
A small firm may balk at buying that extra laptop or seat. But probably the best way to go. If the employee is on the road, then check out a laptop. If they use network licenses, it's a simple matter of checking out their license and the laptop is owned by the firm. Not a problem. But a hard to swallow if employees are on the road once awhile and the laptop sits gathering dust 2/3s or the time.
Not for the employee who wakes up in the morning and feels too ill to want to commute in to work but feels sufficiently well to get some work done. Since cannot anticipate falling ill, no way to check out a laptop. They may have VPN but now are unable to checkout a license because the machine they have is personal and so not within the control of the employer. Go back to bed. Probably better for them anyways.
As far as illegal copies floating around, I agree that there will be more. But not intentional. Many companies buy the software, install them and never think about them again. 1 license=1 user. For the most part this has mostly held true on software you purchase. Not all firms have CAD managers and many are good at using the software and dont really think about legal mambo jumbo. Same with many IT guys. They equate being legal with buying the seats you need that corresponds with the number of users you have. Initially working from home works fine for other enterprises because everyone has microsoft office at home. Typing that memo or creating a spreadsheet is fine to an extent. Everyone has some kind of image manipulation software at home. Not everyone owns a 3grand drafting software.
As can be seen through the number of post here, there are solutions for some firms but not all and definitely nothing affordable for the small guy.