A desktop publishing application from Microsoft that focuses on page layout and graphic design.
Your analogy may not be quite correct. When you use a subscription, it's more like renting a car, rather than buying one.
"This is the exact reason cloud based or subscription-based software is dangerous!"
You're right. That's the risk you take using subscriptions. If you want to "buy the car", then you purchase a perpetual license and install the software on your desktop. Even if the manufacturer decides to no longer support the software, you can continue to use it (i.e., continue to drive the car).
Microsoft, nor is anyone else, forcing you to buy a subscription. There are alternatives in the market place--some are web-based and some desktop. Some are better than others.
The government can't step in because there is no law broken. The same thing can happen if a company offered subscription software and then later went out of business. The government is not going to step in and require or pay the company stay in business.
In general, Microsoft Services Agreements and related licensing terms do not guarantee a formal "migration path" for discontinued software. Instead, Microsoft typically provides a notice and a period of time for you to find alternatives.
The bottom line is this. When you buy into a subscription model, you need to ask yourself what your solution will be if the software is no longer available. If you don't have a good answer, then maybe you need to reconsider.