Microsoft Maths
So they could get their products £270m cheaper without any silly subscription malware? (subscription somewhat needs an agent running in the background to monitor the "health" of the subscription, plus all that extra telemetry...).
Frankly, I think subscriptions should be illegal - or at least you should own the perpetual license after max 24 instalments. Company should also be required to fix any bugs for up to 6 years after purchase or release the source code so that the customer could get someone to fix it and then charge the company.