Why is it a good idea?

Employees less likely to leave without notice.

Employees stay longer because the safety net grows.

Less likely to speak poorly about you after leaving

More secure in their job. More emotional invested.

What are your reasons for not? Even if google stops selling at home they will keep the server alive for a grace period.

I had a friend who ran a bitcoin market. When the market shutdown he was responsible for customer records for 7 years and had to pay a company to secure access in case of requests.