Glad you admit it.
The private sector by and large hasn't needed strikes to get pay rises higher than the public sector. Employers have to pay more to recruit and retain staff. In the public sector the government just doesn't care about staff shortages caused by low wages (and lies about the numbers).
On the railways, privatisation brought little competition for the passengers but it did bring competition for staff (driver pay shot up) and train companies settled separately with the unions. The Financial Times explains:
"In the pre-Covid era, the train operators were able to negotiate with the unions on an individual basis rather than collectively, making accommodations easier to come by. That changed when the pandemic ended the franchising model and the train companies became fee-driven operators bearing none of the revenue risk, with the taxpayer taking it on instead. And with the government standing behind the budget, it inevitably ends up setting the terms of the pay package. That leaves employers — bunched together as the Rail Delivery Group — stuck trying to agree tricky nationwide reforms such as driver-only operated trains that, while acceptable on some parts of the network, are a red rag to the RMT union on others."
Disputes at Royal Mail and the railways will not be solved with pay rises alone
www.ft.com