For me, being an "IT Company" or "Tech Company" means the tech is what drives the business decisions.
Where I work, it's a b2b service company. We've had CIOs get up and say we're a tech company, but when push comes to shove, the IT org always loses to "the business". The business solutions are what are being sold, they really don't care what the tech is under the hood... even if the tech enables every product to exist at this point.
This. In the same way that Pre 2000s Boeing was an Engineering company, driven by making a good product 'the right way'. Rather than a business company that happens to rely on engineering.