If it was like postage stamps, some people would buy a years supply now the price is going up!!
I think the number of people involving themselves in the Lottery has dropped and will drop further with the price increase. Anyway the Lottery was sold (I think) to a Canadian pension company so the funds are no longer controlled in any way by those who contribute or are UK residents and the proceeds certainly are not aimed at those who contribute. But this as always is the face of gambling.
I used to spend £8 a week on the lottery, £4 on Saturday, £4 on Wednesday and won virtually nothing, perhaps 4 x £10 a year. I stopped buying them more than 8 years ago and started buying Premium bonds instead, whence I have won between £500 and £700 a year. Not a fortune I know but certainly more than the Lottery and I still have my stake money if I want to withdraw it, and I still have the chance of winning £1,000,000.
I don't see that it makes much difference just spend you usual amount on less tickets. If you enter a club raffle for example, whether you get one ticket for £1 or twenty the odds of winning are the same.