Nuts and bolts AI implementation for small business

How can small businesses use AI to increase sales or decrease expenses without massive disruption?
One way for us is using AI to process our email history to identify patterns and write personalized messages based on past correspondence. According to legal advice in which I have confidence, email that is personalized for each recipient (and meets other standards) does not need to be opt in. If you disagree - understood - but spam morality is not the topic here. Bottom line - obviously a game changer.
Knowing phrases people have used before becoming clients - and all of the possible permutations of those phrases, and detecting where those phrases show up will make our sales and marketing many times more effective for a fraction of the cost. There's a reason big corps. record calls, and now small business can leverage the same technology.
We are setting up a process that yields accurate, up to date, comprehensive data for our own business operations. Our clients - who are they and how has their demographic changed over time? To answer this question and for email personalization, we also need access to external data sources e.g. like accurate up to date company demographics. IMO - the leader in company data in the US? THEY SUCK.
We found there is no magic fairy who is going to make good data appear for our AI.
The process of applying our own proprietary knowledge to code and categorize the data is just as important, and obviously highly sensitive. How do we leverage the AI technologies of companies like Google and Microsoft (or anyone else) without being their bitch?
Below is a list of some of the sources of my business's data:
Data sources:
PST/OST/Other Email data files
Microsoft data from Windows/O365
Windows/Linux/Android/IOS application logs and other data
Web server logs for the company website.
SEO/Analytics Data
Google data export
Google voice/VOIP logs
OneDrive/G drive
Other Phone system/cell service logs
Other SAAS and in-house application data.
Facebook/social media data for company pages.
QuickBooks/other accounting systems/business bank account logs
POS/Credit card processing systems/PayPal, etc.
OSINT to fill in the blanks