The sales model for everyone has evolved over the years . If you were to introduce a monthly subscription cost then anyone who spent on a perpetual licence is going to feel an immediate bump, because other users are getting on the bus for much much less.
Monthly subs certainly makes it more affordable and Adobe proudly announced that the use of pirated software plummeted when they did this.
The Adobe CC suite is absolutely astonishing value when you are able to make use of 3 or more of their packages, so it's very easily justified. They've cemented thier market position forever as no competitor will ever get a look in now
Pricing is important, but AutoCAD is already the "industry standard". I think one of VW strongest points is the sheer amount of import/export functions. It will play nicely with a lot of different softwares.
Be careful with that! It's not so much a perpertual licence, but an end of life for maintainance and support, with financial penalty if you want to get back into the support cycle.
Sure you can use the softwareforever, but any critical fixes and patches are never rolled out to you beyond two versions. There's lots of people on legacy versions of VW, but they're still running with bugs which are fixed for other people, but not for them. Just think of those poor folk who have a perpertual licence for 2013, and now because their OS has updated, they can no longer use this perpetual licence.... Perpetual, is not perpetual... Perpetual is, "you're on your own from here, kid" maybe a year, maybe two, but not perpetuity.
I don't know of any other software firm which leaves legacy versions with critical issues still unpatched.
The answer is not impossible to find.
The intial lump sum has been paid by every VW user so dumping this in favour of a subscription will annoy the existing customer base. Instead give them a heavily discounted rate back to what VSS costs. (for me it's £550 a year, or hopefully, £50pcm soon)
For those who don't want the initial outlay, raise their subscription to say £750/year, or £75pcm) for a true perpetual Software-As-A-Service Model. (OS updates won't break you!)
And finally, for those who want the benefits of the first package, but cant afford the out-lay, how about £1k or £100/pcm, until they've paid their "Perpetual" lump sum, and then it drops to half.
This will help grow the user-base, encourage long term use..... but crucially, from a development and support perspective, everyone will be on the latest version anyway. Completely removing the unsupported legacy version argument.... And, it'll heavily reduce piracy as well.
As a final comment, one thing I'd love to see that no-one offers at the moment is a pay-per-view model.
I would love to see all these photoshop/autocad subscription models offer a 5-day, pay as you go model. Some users don't want to sign in for a year. Just pay when they use it once in a blue moon. Would happily pay £10 for a week of photoshop, when I have a job to price it into, or £20 for one week of 3DS max, when I know I won't use it for 45 weeks of the year. It means I can build the software cost into the individual job, if needed.
As ever, I'd love to read other user's thoughts about this.