My central assumption remains that Mr Lai will adopt the same principle as JP and simply invest, on average, the club's free cash. The spending on Lai is almost certain, on average, to be higher than JP because the free cash is much higher following the new sky deal. That's nothing to do with him being richer/more ambitious/more generous. He will just have more to play with. We made many record signings under JP but no one is saying that this was because he was more benevelant than Silk. It's just that all the numbers have got bigger. It may well be that also spends 1.5x more than JP; if so it will be because of the club having a greater p&l rather than Lai personally.
As I said at the time of the takeover, we really should separate Mr Lai's apparent personal (or corporate backed) wealth from what he's going to invest in Albion. Speaking from my own personal experience, I've bought dozens of businesses and have the resources to pour money in to them but never do. They are investments viewed dispassionately and entirely separate from how I view cars, houses et al that I may buy personally.
I may be proved wrong. I hope I am and that Mr Lai really does want to put personal wealth onto the pitch. However, the balance of probabilities are against it. There are plenty of other wealthy owners in football who could easily chuck £100m at players without in anyway damaging their own lifestyle. There are billionaire owners of Championship clubs who could probably guarantee Premiership promotion with only 10% of their wealth "invested". Steve Lansdown at Bristol City and Shaid Khan at Fulham are two that sprin to mind. Many of these are genuine lifelong fans of their clubs but still they won't do it. Why should we believe that someone who'd never seen an Albion match two years ago behave so differently?