Yes. You have the option to retain these in the database as long as you’d like. There’s no threshold on the number of revisions allowed but you do have the ability to set a preferred limit.
Since revisions can bloat the wp_posts table and decrease performance levels at scale, Pagely disables these be default unless requested by the user. To sustain a high performance, we recommend purchasing a dedicated RDS with your VPS.
For more information, check out our article on our Support Knowledge Base on enabling Post Revisions.