Why only one hosting tier?

I’m always saying, we only offer “private managed VPS” for hosting.

Simply put, we want secure environments or no environments.   So I was interested to read this vulnerability report on how insecure shared hosting environments were hacked to reveal all users of the service:

https://www.wordfence.com/blog/2019/06/service-vulnerability-four-popular-hosting-companies-fix-nfs-permissions-and-information-disclosure-problems/?utm_source=list&utm_medium=email&utm_campaign=060319&_hsenc=p2ANqtz-_nid8XkogoGHNho_TrmaBjPJiHuN1oZxB8ikgOIoIE57dDtwyYM9UhOAJ9J4tM3z1ZAGLEc2bZt9gFRyN1SwHVYwuvEA&_hsmi=73295735