IT/technology is just abnormally overpaid as a whole. I'm not saying it shouldn't be, just that it is.
In the UK, IT/technology is arguably underpaid, compared to the value it generates. Just remember the TSB IT meltdown last year. (https://www.theguardian.com/business/2022/dec/20/tsb-bank-fi...)
The average salary for a solicitor is ~£70,000
https://www.checkasalary.co.uk/salaries/solicitor
The average salary for IT is ~£50,000
https://www.checkasalary.co.uk/salaries/information-technolo...
For a software engineer ~£60,000.
This is less about the pay of any individual working there, but a culture of underinvestment which the UK public sector has been undergoing for the past 15 years.
It's going on for much longer than that. It's hard to think of a time when there was investment. It's also hard to think of a time when the individuals and teams who could have prevented this would be given the respect that they deserve. This is a problem in the UK that extends beyond the UK public sector because a lot of the management in large organisations has some cultural similarities.
There is no such thing as a normal salary. People are paid what the market demands.
We're not serfs. If one job offers more compensation than another everyone is entitled to leave and go elsewhere.