Dockers explained with an analogy of co-working space

Doesn’t Heroku also sound similar to a co-working space? As far as I understand that Heroku is a miniature EC2 that is not cost-efficient at scale. Same goes with coworking space, there’s only a limited a company can grow in a defined space. After consuming co-working’s capacity, the company is on its own. Docker is technically explained correct but its analogy with a co-working space doesn’t sound perfect to me.