What would happen if...

> you banned certain country IPs?

> you had a pre-qualifying opt-in requirement, where a visitor had to affirm that Yes, they were in one or more of the specific situations your SaaS provides a solution for?

> you made each potential trial user have to call and have a 2-minute qualifying conversation with your staff?

One or more of these will give you a better-qualified trial user pool.

I see this frequently in my marketing coaching: the person is afraid that without being "open" to all and sundry, they're somehow going to be turning off and turning away tons and tons of business.

How's business now?

What do you have to lose?

What do you have to GAIN from a pool of much-better qualified prospects?

Look at how the SaaS market generally does what it does...and the results they're getting. Do you like those results? If not, maybe you should be behaving differently.